Add ability to disable installation of nova utilities

Install them by default, preserving previous behavior.

Conflicts:
	manifests/init.pp
	spec/classes/nova_init_spec.rb

Change-Id: I01ab67330b4a66f0af44a0c83c81dc9601cf57b5
Closes-bug: #1281392
(cherry picked from commit d39d4c42f17958e7973ebf9c757a4553799d9795)
Fixed gate by Updating Gemfile to pin Rake to 10.1.1

The latest Rake update requires Ruby >= 1.9. Bundler in the
current gate uses 1.8.x. This update fixes the gate by pinning
Rake to the last known working version.

Change-Id: I841864dc1c84249f2989d81a7f5fd909a3dab6b6
Merge "Add ability to disable installation of nova utilities" into stable/havana