Bump src/cloud_controller_ng

Bump cloudfoundry/cloud_controller_ng:
  James Myers:
     Fix typo ( Travis created: https://travis-ci.org/cloudfoundry/cloud_controller_ng/builds/25117865 )
  Derek Richard and Leo Rossignac-Milon:
     Redact creds for service_instances based on role ( Travis Success: https://travis-ci.org/cloudfoundry/cloud_controller_ng/builds/25111573 )