Bump src/cloud_controller_ng

Bump cloudfoundry/cloud_controller_ng:
  Abhijit Hiremagalur:
     Revert recent commits to fix CI ( Travis created: https://travis-ci.org/cloudfoundry/cloud_controller_ng/builds/26720917 )
     Avoid including TempFileCreator in all examples ( Travis Failed: https://travis-ci.org/cloudfoundry/cloud_controller_ng/builds/26719174 )