Update vcap-yeti tests.

[#57532070]

Signed-off-by: Stephan Hagemann <stephan@pivotallabs.com>
use meta.environment for deployment name

Stubs no longer specify deployment name, because they'll potentially be
used for different deployments. They can still specify it if they want
to though, and it'll win.
fix specifying meta.environment in templates
Bump src/cloud_controller_ng

Bump cloudfoundry/cloud_controller_ng:
  Alex Suraci and Sarah Chandler:
     fix app package cleanup when no bits are uploaded ( Travis finished: https://travis-ci.org/cloudfoundry/cloud_controller_ng/builds/12062747 )
  Phan Le and Sarah Chandler:
     Removed the file after the droplets and buildpack caches are processed ( Travis Failed: https://travis-ci.org/cloudfoundry/cloud_controller_ng/builds/12059295 )
     Removed the file after the app bits are processed ( Travis Unknown )
     Removed unused code ( Travis Success: https://travis-ci.org/cloudfoundry/cloud_controller_ng/builds/12019167 )
  Phan Le and Ruth Byers:
     Removed AppPackage object as its functionality is now provided by AppBitPacker. [Finished #56898266] ( Travis Success: https://travis-ci.org/cloudfoundry/cloud_controller_ng/builds/11986421 )
     Removed ActiveRecord migration support ( Travis Success: https://travis-ci.org/cloudfoundry/cloud_controller_ng/builds/11984171 )
     Return only the admin buildpack provided by the application when sending a staging request. [#56898266] ( Travis Success: https://travis-ci.org/cloudfoundry/cloud_controller_ng/builds/11983806 )
     Add an option to support buildpack name when pushing an app. ( Travis Unknown )
  phanle:
     Move test setup to the right place ( Travis Success: https://travis-ci.org/cloudfoundry/cloud_controller_ng/builds/11894604 )
  Mark Rushakoff:
     Add test instructions to README ( Travis Success: https://travis-ci.org/cloudfoundry/cloud_controller_ng/builds/11878594 )
  Julz Friedman and Sarah Chandler:
     Fix tests ( Travis Success: https://travis-ci.org/cloudfoundry/cloud_controller_ng/builds/11875878 )
  Julz Friedman and Ruth Byers:
     Add initial Rspec Api Documentation generation ( Travis finished: https://travis-ci.org/cloudfoundry/cloud_controller_ng/builds/11875314 )
Bump yetis

[#57532070]