Bump src/cloud_controller_ng

Bump cloudfoundry/cloud_controller_ng:
  Ketan Deshpande and Whitney Schaefer:
     Don't create a logger in the repo initializer ( Travis started: https://travis-ci.org/cloudfoundry/cloud_controller_ng/builds/43884101 )
  Joseph Palermo and Serguei Filimonov:
     Update to use delayed_job_sequel that avoids deadlocks ( Travis Success: https://travis-ci.org/cloudfoundry/cloud_controller_ng/builds/43863812 )
  David Sabeti and Whitney Schaefer:
     Fix failing spec in service_bindings_controller_spec ( Travis Success: https://travis-ci.org/cloudfoundry/cloud_controller_ng/builds/43786861 )