docker to use syslog log driver

[und1sk0]

• consolidate all loggly rules into a single role that reads logs from the system log socket and places files that match a tuple of facility (local7) and string matches the app_name then places that message into the correct file (then stops).
• update all.yml to make syslog the default log driver for docker
• remove json_file from various group_vars files (overrides default syslog driver)

Dependencies

• rsyslog, docker-engine, linux ;)

Reviewers

• @anandkumarpatel
• @bkendall

Tests

Test any modifications on one of our environments.

• tested on epsilon/mavis by @und1sk0
• tested on epsilon/api_group by @und1sk0
• tested on epsilon/app-services by @und1sk0
• tested on epsilon/docks by @und1sk0
• tested on gamma/docks by @und1sk0
• tested on gamma/api by @und1sk0

Deployment (post-merge)

Ensure that all environments have the given changes.

• deployed to epsilon
• deployed to gamma
• deployed to delta

[und1sk0]

pushing this out to staging envs (epsilon, gamma) today.

[und1sk0]

Logs show up in {{ name }}-daemon.log:

root@ip-10-12-197-140:/var/log# tail -1 charon-daemon.log 
Apr 14 23:33:13 ip-10-12-197-140 node: {"name":"charon","environment":"production-epsilon","host":"10.12.197.140","hostname":"ip-10-12-197-140.17654916","pid":6203,"module":"server","level":20,"address":"172.17.0.2","questions":[{"name":"s3-us-west-2.amazonaws.com","type":1,"class":1}],"msg":"No internal container domain names given, skipping.","time":"2016-04-14T23:33:13.460Z","v":0}

And in loggly: https://sandboxes.loggly.com/search#terms=%22Incoming%20DNS%20Query%22&from=2016-04-14T23%3A04%3A42.569Z&until=2016-04-14T23%3A34%3A42.569Z&source_group=&filter=json.environment%3Bproduction-epsilon

[anandkumarpatel]

mavis deleted?

[und1sk0]

ammended

[bkendall]

lgtm