Bump src/cloud_controller_ng, src/dea_next, src/vcap-common

Bump cloudfoundry/cloud_controller_ng:
  Alex Suraci and Phan Le:
     Fixed a stubbed out test. ( Travis Success: https://travis-ci.org/cloudfoundry/cloud_controller_ng/builds/11614737 )
     Fix the build (lots of test pollution) ( Travis Success: https://travis-ci.org/cloudfoundry/cloud_controller_ng/builds/11614553 )
  Tim Labeeuw:
     Stager chooses the top 5 memory available systems [finishes #57351014] ( Travis Failed: https://travis-ci.org/cloudfoundry/cloud_controller_ng/builds/11614293 )
     Refactored the advertisments ( Travis Failed: https://travis-ci.org/cloudfoundry/cloud_controller_ng/builds/11614045 )
     Move deleted space to runtime ( Travis Failed: https://travis-ci.org/cloudfoundry/cloud_controller_ng/builds/11612629 )
     Only stage on the top 5 memory machines [#57351014] ( Travis Failed: https://travis-ci.org/cloudfoundry/cloud_controller_ng/builds/11612248 )
     Woops forgot to move the stager pool spec ( Travis Failed: https://travis-ci.org/cloudfoundry/cloud_controller_ng/builds/11610340 )
     Extract out the stager and dea pool code ( Travis Failed: https://travis-ci.org/cloudfoundry/cloud_controller_ng/builds/11607661 )
  Chris Brown and Julz Friedman:
     Denormalize space_guid, organization_guid on Event ( Travis Failed: https://travis-ci.org/cloudfoundry/cloud_controller_ng/builds/11611664 )
  Jimmy Da and Matthew Horan:
     V2 services don't currently have a version ( Travis Failed: https://travis-ci.org/cloudfoundry/cloud_controller_ng/builds/11611615 )
  Alex Suraci:
     rename AppManager to AppObserver ( Travis Failed: https://travis-ci.org/cloudfoundry/cloud_controller_ng/builds/11607314 )
     remove delete_droplet from stagings controller ( Travis Unknown )
Bump cloudfoundry/dea_ng:
  Tim Labeeuw:
     Temp fix for the Linux vs Mac EOF error ( Travis Success: https://travis-ci.org/cloudfoundry/dea_ng/builds/11603445 )
  Alex Suraci:
     simplify test scripts ( Travis Failed: https://travis-ci.org/cloudfoundry/dea_ng/builds/11578785 )
  Alex Suraci and Sarah Chandler:
     fix travis config ( Travis Failed: https://travis-ci.org/cloudfoundry/dea_ng/builds/11576497 )
Bump cloudfoundry/vcap-common:
  Matthew McNew:
     Increase timeout for intermittently failing spec. ( Travis Success: https://travis-ci.org/cloudfoundry/vcap-common/builds/11605369 )
     Refactored Windows tests. ( Travis Unknown )
     Merge branch 'pr/10' ( Travis Unknown )
  Tier 3:
     Update to make work on Windows ( Travis Unknown )