fixes to make ccng buildable with ruby cnb

[#174523162]

Author: cwlbraa

Procfile

@@ -0,0 +1,7 @@
+web:                bin/cloud_controller -c /config/cloud_controller_ng.yml
+local-worker:       bundle exec rake jobs:local
+api-worker:         bundle exec rake jobs:generic
+clock:              bundle exec rake clock:start
+deployment-updater: bundle exec rake deployment_updater:start
+migrate:            /bin/bash -c 'bundle exec rake db:wait_for_istio && bundle exec rake db:setup_database && bundle exec rake db:terminate_istio'
+

buildpack.yml

@@ -0,0 +1,2 @@
+mri:
+  version: 2.5.*