Bump src/cloud_controller_ng

Bump cloudfoundry/cloud_controller_ng:
  Chris Brown and Maria Shaldibina:
     Register with router after full load
     Don't autoload models
  Jimmy Da and Matthew Horan:
     Create endpoint to return services visible to org
  Phan Le and Ruth Byers:
     Remove FakeFS gem
     Create a delete functionality in blobstore. Cleaned up blobstore test to no longer using FakeFS.
  Gregg Van Hove and Phan Le:
     bump errors for buildpack invalid fix
     Only zip format admin buildpacks are allowed.
     don't try to remove buildpack from blobstore if it was never uploaded
  Ryan Tang and Yunus Rahbar:
     Add long_description to service
     Add long_description to service
     [MIGRATION] Add long description to service
  Alex Jackson and Mark Rushakoff:
     Events are ordered by timestamp by default
  Alex Suraci and Maria Shaldibina:
     [MIGRATION] remove unencrypted environment_json column