[services-ng] support postgresql9.2

Change-Id: Iaf2d985862f4097f9202a548560adf6381a37153
[services-ng] upgrade rabbitmq to 3.0
fix postgresql node
Use ruby_next in drain script
Merge pull request #54 from mflu/postgresql92

[services-ng] support postgresql9.2
Merge pull request #57 from EagleChen/master

[services-ng] upgrade rabbitmq to 3.0
remove log_server job

also remove logplex and erlang_r15 packages
Merge git://github.com/cloudfoundry/cf-release