Revert "Update postgres 64 to 9.2.4"

This reverts commit dac014ec766017ee9ec5d08d6127d35724a36c66.

Conflicts:
	config/blobs.yml
Revert "Install citext extension"

This reverts commit d8c8eb7b413cce28d99817c2e6c7dc0fed3abdca.
Bump src/cloud_controller_ng

Bump cloudfoundry/cloud_controller_ng:
  Gregg Van Hove and Maria Shaldibina:
     patch delayed job/active record to work with postgres 9.0 ( Travis started: https://travis-ci.org/cloudfoundry/cloud_controller_ng/builds/11030726 )
  Alex Choi and Jeff Schnitzer:
     Better error messages for broker catalog failures. ( Travis finished: https://travis-ci.org/cloudfoundry/cloud_controller_ng/builds/11027451 )
     Updated text of service broker malformed response error. ( Travis finished: https://travis-ci.org/cloudfoundry/cloud_controller_ng/builds/11025361 )
     Move broker client error specs into service_broker_client_spec. ( Travis Unknown )