Trusty images

* using phusion/baseimage:0.9.10 as base image
* remove 2.1.1 ruby version from trusty image
* update elasticsearch to 1.2.1
* update mysql to 5.6
* using runit for service initialization
Merge branch 'trusty'
fixed redis server startup
dont clean apt cache
fixed elasticsearch and redis startup
Merge remote-tracking branch 'upstream/master'

* upstream/master:
  fixed elasticsearch and redis startup
  dont clean apt cache
  fixed redis server startup
  Trusty images