Add icinga_stats collector

Commit adds icinga_stats collector which produces metrics by scraping data in
status.dat file produced by Icinga/Nagios.

Signed-off-by: Zdenek Styblik <zdenek.styblik@icflix.com>
feat(endecadgraph): new collector

Change-Id: I96d444b13962337f1504f8de961a74b5548f1d6e
Icinga Stats Collector - remove trailing wspace
Signed-off-by: Zdenek Styblik <zdenek.styblik@icflix.com>
Icinga Stats Collector - "translations" didn't work

Value translations didn't work, because "0,1,2" will match [0, 1]. Let's convert
given value to int which is exactly what we want.

Signed-off-by: Zdenek Styblik <zdenek.styblik@icflix.com>
icinga_stats - fix metric collision

Commit fixes metric collision between hosts.scheduled and
hosts.scheduled.{01,05,15}. This was caused by incorrect split().

Signed-off-by: Zdenek Styblik <zdenek.styblik@icflix.com>
Parse the full list of elbs, and remove the ones that match the regular expressions
ELB tests are now passing
Merge pull request #657 from CashStar/add_elb_ignore_regex

Add elb ignore regex
Fix rabbitmq test
Support for config merging from specified directory
Patch beanstalkd collector

'version', 'id', and 'hostname' are not statistics and can be ignored.

See the protocol for a full list of outputs, and their description:

https://github.com/kr/beanstalkd/blob/master/doc/protocol.txt
Merge pull request #659 from MichaelDoyle/patch_beanstalkd_collector

Patch beanstalkd collector
Update memory.py

Add Committed_AS data to collected keys
Made pid detection more robust against invalid data (blank, non-numeric)
Unraveled staircase of nested for loops
Merge pull request #662 from rogerhub/master

Made pid detection more robust against invalid data (blank, non-numeric)
new(feat): added collector for chrony time offsets (ntp time skew)

Change-Id: If4863300ed483dcd83280dfe5c6d668eeacad530
Make handling of mongodb config more robust

- Make sure hosts parameter is interpreted correctly
- Enable option to always specify an alias
Remove history - not needed
Comment out debug stmt