fixes CC-302: replaced SERVICED_VFS with SERVICED_FS_TYPE, vfs with fsType, VFS with F...

...SType

https://jira.zenoss.com/browse/CC-302

DEMO - snapshot still works:
```
# plu@plu-9: docker images |grep 5000
plu-9:5000/e1vkqe94ppx2450z6v7simbil/devimg     latest              94a4b48b3c4d        7 days ago          2.192 GB
plu-9:5000/e1vkqe94ppx2450z6v7simbil/opentsdb   latest              f55af1da2e5f        8 days ago          1.347 GB
plu-9:5000/e1vkqe94ppx2450z6v7simbil/hbase      latest              155bef732a18        11 days ago         595.9 MB

# plu@plu-9: serviced service snapshot mysql
e1vkqe94ppx2450z6v7simbil_20141107-163123

# plu@plu-9: docker images |grep 5000
plu-9:5000/e1vkqe94ppx2450z6v7simbil/devimg     20141107-163123     94a4b48b3c4d        7 days ago          2.192 GB
plu-9:5000/e1vkqe94ppx2450z6v7simbil/devimg     latest              94a4b48b3c4d        7 days ago          2.192 GB
plu-9:5000/e1vkqe94ppx2450z6v7simbil/opentsdb   20141107-163123     f55af1da2e5f        8 days ago          1.347 GB
plu-9:5000/e1vkqe94ppx2450z6v7simbil/opentsdb   latest              f55af1da2e5f        8 days ago          1.347 GB
plu-9:5000/e1vkqe94ppx2450z6v7simbil/hbase      20141107-163123     155bef732a18        11 days ago         595.9 MB
plu-9:5000/e1vkqe94ppx2450z6v7simbil/hbase      latest              155bef732a18        11 days ago         595.9 MB

```

Zenoss still works:

![screen shot 2014-11-07 at 10 32 18](https://cloud.githubusercontent.com/assets/2837923/4956385/b054dfb0-669b-11e4-8b66-6443ede2c90a.png)