Bump src/cloud_controller_ng

Bump cloudfoundry/cloud_controller_ng:
  Phan Le:
     Finish StagingsController refactoring ( Travis Success: https://travis-ci.org/cloudfoundry/cloud_controller_ng/builds/23796492 )
     Refactor stagings_controller. ( Travis Unknown )
     Minor test refactoring ( Travis Unknown )

Signed-off-by: Kai Zhang <kaizhang@cn.ibm.com>
Java Buildpack 2.1.2

This change updates the Java Buildpack to version 2.1.2.  Version
2.1.2 fixes a bug in Java Buildpack Auto-reconfiguration and adds
support for Ubuntu 14.04 (Trusty Tahr).

Both the online and offline buildpacks are updated as part of this
change.