Bump src/cloud_controller_ng:

Alex Suraci and Kowshik Prakasam (1):
      default app scope to not include deleted apps

Austin Vance and Maria Shaldibina (2):
      Uncomment CC tests back
      Merge branch 'master' of git://github.com/anynines/cloud_controller_ng into anynines-master

David Sabeti and Jeff Schnitzer (1):
      Bump vcap-common

Jon Stevens and Tim Labeeuw (1):
      remove premature optimization for scaling apps [fixes #51122485 #51178431]

Julian Fischer (4):
      Updated fog to 1.11.1
      file.url is not defined for some fog providers such as HP; they will use public_url instead; file.destroy throws a NotFound error for some providers
      Created create_app_package method to avoid code duplication; tested AppPackage#package_uri - file.url/public_url
      Added tests for Staging#delete_droplet to ensure proper deletion when using different Fog providers

Tim Labeeuw and Tom Chan (1):
      Started writing user summary