Revert "Revert "Allow skipping SSL validation for uaa-lib connections""

This reverts commit fce4de624aeebf4eedd2f9dd5a580cf70443737e.
Revert "Revert "Ruby 2.1 packages and specs.""

This reverts commit ffb1f37dedaf1744fb3a95deae548874f93f11e8.
use ruby 2.1 for newrelic_nginx_agent

- cloud_controller jobs include both the ruby and ruby-2.1 packages
- syslog_aggregator uses the ruby package and can be upgraded separately later
[#70710962]
Add ruby-2.1.3 package and include it with cloud_controller

[#70710962]
nginx_newrelic_plugin uses ruby 2.1.3

[#70710962]
Bump src/cloud_controller_ng

Bump cloudfoundry/cloud_controller_ng:
  Eric Malm and Luan Santos:
     Change Gemfile to use github: for the github hosted gems ( Travis started: https://travis-ci.org/cloudfoundry/cloud_controller_ng/builds/37643206 )
  Luan Santos and Mike Dalessio:
     Downgrade pg and newrelic_rpm ( Travis Success: https://travis-ci.org/cloudfoundry/cloud_controller_ng/builds/37620023 )