allow service specifier to suffix match path in service tree

This enhancement is helpful if a deployment has hierarchical services like, multiple zenoss collectors.  It allows the user to start/stop 'collector1' collector easily with 'serviced service start collector1' and 'serviced service stop collector1'

DEMO:
```
# plu@plu-9: serviced service list
NAME			SERVICEID			INST	IMAGEID				POOL		DSTATE	LAUNCH	DEPID
└─Zenoss.core.full	2zg7c7hmk0cgw5rk9yzeg2k54	1	.../2zg7c7h.../devimg		default		0	auto	HBase
  ├─zenactiond		2pz01ugrccg8if0jajte5u1ka	1	.../2zg7c7h.../devimg		default		0	auto	HBase
  ├─zeneventserver	58128zxxcmg1bszac50brjgmv	1	.../2zg7c7h.../devimg		default		0	auto	HBase
  ├─localhost		5ii3qc8on22zt2bqk2sjkkx1o	0					default		0	auto	HBase
  │ ├─zenhub		3n9tau98plrqizghcakyc6doh	1	.../2zg7c7h.../devimg		default		0	auto	HBase
  │ └─localhost		f0j7svnrywq00c40gaqlgoi7g	0					default		0	auto	HBase
  │   ├─zenstatus	110aurudghsd75mz0x5607xqa	1	.../2zg7c7h.../devimg		default		0	auto	HBase
  │   ├─zentrap		1v7vb1fxo5mn33qnnjncohqbr	1	.../2zg7c7h.../devimg		default		0	auto	HBase
  │   ├─zminion		38q5hrdpqu0bawge5uk7rwxlh	1	.../2zg7c7h.../devimg		default		0	auto	HBase
  │   ├─zenperfsnmp	3vflja392kksdgkujtlzsfj7b	1	.../2zg7c7h.../devimg		default		0	auto	HBase
  │   ├─zensyslog	4if1oq68u8dqd92cpegz242jp	1	.../2zg7c7h.../devimg		default		0	auto	HBase
  │   ├─zenmodeler	5e2tgcqsfk5nlhxpbsnnmzfwc	1	.../2zg7c7h.../devimg		default		0	auto	HBase
  │   ├─zenping		7e2l1wb5yoxek0t60wx0408dn	1	.../2zg7c7h.../devimg		default		0	auto	HBase
  │   ├─zenprocess	7xwzygd4ahypeh4n6cnec9qh3	1	.../2zg7c7h.../devimg		default		0	auto	HBase
  │   ├─zenjmx		8xvc5w7etlet0k7j6fli4iswi	1	.../2zg7c7h.../devimg		default		0	auto	HBase
  │   ├─zencommand	anzd11zr7gquqzfinz0ngj5nl	1	.../2zg7c7h.../devimg		default		0	auto	HBase
  │   ├─MetricShipper	b7swbk35kzo03yfaj7cow2kwd	1	.../2zg7c7h.../devimg		default		0	auto	HBase
  │   ├─zenpython	bh7q8bq66wszv9b4gpgxehp9k	1	.../2zg7c7h.../devimg		default		0	auto	HBase
  │   └─collectorredis	dcmp0xaz9w1gd2mpbe2rmulbx	1	.../2zg7c7h.../devimg		default		0	auto	HBase
  ├─zeneventd		62fihtydiuhq2ucnmsf3f7t79	1	.../2zg7c7h.../devimg		default		0	auto	HBase
  ├─MetricShipper	6ti5jbyh6xftweeobwmguxk6r	1	.../2zg7c7h.../devimg		default		0	auto	HBase
  ├─RabbitMQ		7utdjol9id78gb1q788izd2c2	1	.../2zg7c7h.../devimg		default		0	auto	HBase
  ├─Zope		89z8xxzh6o7ltx2yemf3w91yd	2	.../2zg7c7h.../devimg		default		0	auto	HBase
  ├─CentralQuery	8sw840zqs9d9ohfksakgzn6tm	1	.../2zg7c7h.../devimg		default		0	auto	HBase
  ├─MySQL		8uth3wzcnrtn32azn0s2lgjuf	1	.../2zg7c7h.../devimg		default		0	auto	HBase
  ├─opentsdb		9vrunxcdw10hlcuga7bobu9m3	0					default		0	auto	HBase
  │ ├─writer		3nvi1ujzjp2r0mb8ocq5ytj86	1	.../2zg7c7h.../opentsdb		default		0	auto	HBase
  │ └─reader		aq6wn22m2jqlwqcsgxvv1vru3	1	.../2zg7c7h.../opentsdb		default		0	auto	HBase
  ├─redis		9y8tp5ysg64w2hpola5twauzi	1	.../2zg7c7h.../devimg		default		0	auto	HBase
  ├─zenjobs		beh5xyjls2x9iehm7u470dqyg	1	.../2zg7c7h.../devimg		default		0	auto	HBase
  ├─Zauth		d0oyxb1p5rw3api86v4gh7pl8	1	.../2zg7c7h.../devimg		default		0	auto	HBase
  ├─HBase		d5cnp53f4935x1zd1wb9dwkke	0					default		0	auto	HBase
  │ ├─HMaster		aaqczfvj0dzmjxstb0tl7x38m	1	.../2zg7c7h.../hbase		default		0	auto	HBase
  │ ├─RegionServer	c843hspfvk498wurzafltm5hw	3	.../2zg7c7h.../hbase		default		0	auto	HBase
  │ └─ZooKeeper		dcl8zjwicylinzvmp8bf4m784	3	.../2zg7c7h.../hbase		default		0	auto	HBase
  ├─MetricConsumer	eyicjjyu2njzrgoo7rbio8rf4	1	.../2zg7c7h.../devimg		default		0	auto	HBase
  └─memcached		jej5try1sso1bqa8xf04a0es	1	.../2zg7c7h.../devimg		default		0	auto	HBase

# plu@plu-9: serviced service list metricshipper
NAME		SERVICEID			DEPID	POOL/PATH
MetricShipper	6ti5jbyh6xftweeobwmguxk6r	HBase	default/zenoss.core.full/metricshipper
MetricShipper	b7swbk35kzo03yfaj7cow2kwd	HBase	default/zenoss.core.full/localhost/localhost/metricshipper
multiple results found; select one from list

# plu@plu-9: serviced service list localhost/metricshipper | head
{
   "ID": "b7swbk35kzo03yfaj7cow2kwd",
   "Name": "MetricShipper",
   "Title": "",
   "Version": "",
   "Context": null,
   "Startup": "su - zenoss -c \"cd /opt/zenoss \u0026\u0026 /bin/supervisord -n -c etc/metricshipper/supervisord.conf\"",
   "Description": "Relay metric data to CentralQuery",
   "Tags": [
     "daemon",
```

DEMO:
```
# plu@plu-9: serviced -v=2 service list metricshipper
I0912 23:36:21.225904 26490 service.go:331] service: Zenoss.core.full  2zg7c7hmk0cgw5rk9yzeg2k54  path: zenoss.core.full
I0912 23:36:21.226112 26490 service.go:331] service: HMaster           aaqczfvj0dzmjxstb0tl7x38m  path: zenoss.core.full/hbase/hmaster
I0912 23:36:21.226142 26490 service.go:331] service: reader            aq6wn22m2jqlwqcsgxvv1vru3  path: zenoss.core.full/opentsdb/reader
I0912 23:36:21.226171 26490 service.go:331] service: writer            3nvi1ujzjp2r0mb8ocq5ytj86  path: zenoss.core.full/opentsdb/writer
I0912 23:36:21.226200 26490 service.go:331] service: opentsdb          9vrunxcdw10hlcuga7bobu9m3  path: zenoss.core.full/opentsdb
I0912 23:36:21.226228 26490 service.go:331] service: HBase             d5cnp53f4935x1zd1wb9dwkke  path: zenoss.core.full/hbase
I0912 23:36:21.226261 26490 service.go:331] service: Zope              89z8xxzh6o7ltx2yemf3w91yd  path: zenoss.core.full/zope
I0912 23:36:21.226302 26490 service.go:331] service: Zauth             d0oyxb1p5rw3api86v4gh7pl8  path: zenoss.core.full/zauth
I0912 23:36:21.226344 26490 service.go:331] service: zenjobs           beh5xyjls2x9iehm7u470dqyg  path: zenoss.core.full/zenjobs
I0912 23:36:21.226389 26490 service.go:331] service: zeneventd         62fihtydiuhq2ucnmsf3f7t79  path: zenoss.core.full/zeneventd
I0912 23:36:21.226432 26490 service.go:331] service: MySQL             8uth3wzcnrtn32azn0s2lgjuf  path: zenoss.core.full/mysql
I0912 23:36:21.226465 26490 service.go:331] service: RegionServer      c843hspfvk498wurzafltm5hw  path: zenoss.core.full/hbase/regionserver
I0912 23:36:21.226496 26490 service.go:331] service: ZooKeeper         dcl8zjwicylinzvmp8bf4m784  path: zenoss.core.full/hbase/zookeeper
I0912 23:36:21.226535 26490 service.go:331] service: RabbitMQ          7utdjol9id78gb1q788izd2c2  path: zenoss.core.full/rabbitmq
I0912 23:36:21.226580 26490 service.go:331] service: memcached         jej5try1sso1bqa8xf04a0es  path: zenoss.core.full/memcached
I0912 23:36:21.226612 26490 service.go:331] service: redis             9y8tp5ysg64w2hpola5twauzi  path: zenoss.core.full/redis
I0912 23:36:21.226642 26490 service.go:331] service: zeneventserver    58128zxxcmg1bszac50brjgmv  path: zenoss.core.full/zeneventserver
I0912 23:36:21.226674 26490 service.go:331] service: zencommand        anzd11zr7gquqzfinz0ngj5nl  path: zenoss.core.full/localhost/localhost/zencommand
I0912 23:36:21.226709 26490 service.go:331] service: MetricConsumer    eyicjjyu2njzrgoo7rbio8rf4  path: zenoss.core.full/metricconsumer
I0912 23:36:21.226739 26490 service.go:331] service: CentralQuery      8sw840zqs9d9ohfksakgzn6tm  path: zenoss.core.full/centralquery
I0912 23:36:21.226768 26490 service.go:331] service: zenactiond        2pz01ugrccg8if0jajte5u1ka  path: zenoss.core.full/zenactiond
I0912 23:36:21.226808 26490 service.go:331] service: MetricShipper     6ti5jbyh6xftweeobwmguxk6r  path: zenoss.core.full/metricshipper
I0912 23:36:21.226837 26490 service.go:331] service: localhost         5ii3qc8on22zt2bqk2sjkkx1o  path: zenoss.core.full/localhost
I0912 23:36:21.226879 26490 service.go:331] service: localhost         f0j7svnrywq00c40gaqlgoi7g  path: zenoss.core.full/localhost/localhost
I0912 23:36:21.226922 26490 service.go:331] service: collectorredis    dcmp0xaz9w1gd2mpbe2rmulbx  path: zenoss.core.full/localhost/localhost/collectorredis
I0912 23:36:21.226955 26490 service.go:331] service: zenmodeler        5e2tgcqsfk5nlhxpbsnnmzfwc  path: zenoss.core.full/localhost/localhost/zenmodeler
I0912 23:36:21.226989 26490 service.go:331] service: zenping           7e2l1wb5yoxek0t60wx0408dn  path: zenoss.core.full/localhost/localhost/zenping
I0912 23:36:21.227023 26490 service.go:331] service: zenperfsnmp       3vflja392kksdgkujtlzsfj7b  path: zenoss.core.full/localhost/localhost/zenperfsnmp
I0912 23:36:21.227056 26490 service.go:331] service: zenprocess        7xwzygd4ahypeh4n6cnec9qh3  path: zenoss.core.full/localhost/localhost/zenprocess
I0912 23:36:21.227087 26490 service.go:331] service: zenjmx            8xvc5w7etlet0k7j6fli4iswi  path: zenoss.core.full/localhost/localhost/zenjmx
I0912 23:36:21.227120 26490 service.go:331] service: zenpython         bh7q8bq66wszv9b4gpgxehp9k  path: zenoss.core.full/localhost/localhost/zenpython
I0912 23:36:21.227168 26490 service.go:331] service: zenstatus         110aurudghsd75mz0x5607xqa  path: zenoss.core.full/localhost/localhost/zenstatus
I0912 23:36:21.227214 26490 service.go:331] service: zminion           38q5hrdpqu0bawge5uk7rwxlh  path: zenoss.core.full/localhost/localhost/zminion
I0912 23:36:21.227250 26490 service.go:331] service: MetricShipper     b7swbk35kzo03yfaj7cow2kwd  path: zenoss.core.full/localhost/localhost/metricshipper
I0912 23:36:21.227292 26490 service.go:331] service: zenhub            3n9tau98plrqizghcakyc6doh  path: zenoss.core.full/localhost/zenhub
I0912 23:36:21.227325 26490 service.go:331] service: zensyslog         4if1oq68u8dqd92cpegz242jp  path: zenoss.core.full/localhost/localhost/zensyslog
I0912 23:36:21.227359 26490 service.go:331] service: zentrap           1v7vb1fxo5mn33qnnjncohqbr  path: zenoss.core.full/localhost/localhost/zentrap
NAME		SERVICEID			DEPID	POOL/PATH
MetricShipper	6ti5jbyh6xftweeobwmguxk6r	HBase	default/zenoss.core.full/metricshipper
MetricShipper	b7swbk35kzo03yfaj7cow2kwd	HBase	default/zenoss.core.full/localhost/localhost/metricshipper
multiple results found; select one from list

```