Bump src/cloud_controller_ng

Bump origin/cloud_controller_ng:
  Michael Fraenkel:
     Merge branch 'DanLavine-recursive_user_delete'
     Merge branch 'recursive_user_delete' of https://github.com/DanLavine/cloud_controller_ng into DanLavine-recursive_user_delete
     Remove experimental from some endpoints
  Abhijit Hiremagalur:
     Rename shared example modules
     Make creation_opts more clear and move it closer to where it is used
     Extract FakeApp object used for "app" in specs
     Rename NginxUpload helper to FakeNginxReverseProxy
     Specs in spec/unit/controller do not need type: controller
  Dan Lavine:
     Update to recursively remove a user from each space associated with an organization.

[#68657876]

Signed-off-by: sabha parameswaran <sparameswaran@gopivotal.com>