Bump src/cloud_controller_ng

Bump cloudfoundry/cloud_controller_ng:
  Onsi Fakhouri and Phan Le:
     add moar logging to hm9000_client ( Travis created: https://travis-ci.org/cloudfoundry/cloud_controller_ng/builds/15354869 )
     correctly handle empty hm9000 status response ( Travis Failed: https://travis-ci.org/cloudfoundry/cloud_controller_ng/builds/15319000 )
  Jimmy Da:
     Ensure API tests for every minor broker api version ( Travis Success: https://travis-ci.org/cloudfoundry/cloud_controller_ng/builds/15319341 )
     Refactor v2.1 test to follow v2.0 pattern ( Travis Unknown )
     Refactor tests, use http requests to build up cc ( Travis Unknown )
     Provisioning section in place ( Travis Unknown )
  David Varvel:
     Add backwards compatibility spec for the 2.1 api ( Travis Unknown )
     Fake service broker checks API version. ( Travis Unknown )
     Send 'app_guid' with bind requests. API is now 2.1 ( Travis Unknown )
  Lucas Marks:
     Refactor helper methods into spec_helper ( Travis Unknown )
     Add tests for broker response error codes and some refactoring ( Travis Unknown )
     Add v2.x API tests for unbinding and unprovision ( Travis Unknown )
     Add API tests for Binding ( Travis Unknown )
  Matt Royal and Parker, Matt:
     Catalog Management section complete. ( Travis Unknown )
  Mark Kropf:
     Revert "Update hm9000_client.rb" ( Travis Success: https://travis-ci.org/cloudfoundry/cloud_controller_ng/builds/15314866 )
     Update hm9000_client.rb ( Travis Failed: https://travis-ci.org/cloudfoundry/cloud_controller_ng/builds/15314563 )
  Alex Jackson:
     Merge branch 's3_blobstore_region_independent' of https://github.com/GiMiScale/cloud_controller_ng into GiMiScale-s3_blobstore_region_independent ( Travis Success: https://travis-ci.org/cloudfoundry/cloud_controller_ng/builds/15307441 )
  Nassos Antoniou:
     Added tests to confirm pull request fix ( Travis Unknown )
     Fixed indentation on shared tests ( Travis Unknown )
     Fix issue with S3 blobstore in non-standard endpoint ( Travis Unknown )
     Fixed cdn blobstore test, passing because of test pollution ( Travis Unknown )
turn snapshoting back on in hm9000