Since we are using PKI tokens now, the keys to validate tokens need to be the same across all keystone instances on all controllers.
cherry picked changes from stable/havanabug fixes

Conflicts:

	metadata.rb
bringing in cherry picked updatesBring in code from upstream for importing of remote signing files for keystone.

Conflicts:

	metadata.rb
	recipes/server.rb
bringing in changes from stable/havanaUncommented "deletion of cache directories for nova,glance,neutron,cinder"

Conflicts:

	metadata.rb
	recipes/server.rb
added additional comments to better explain the pkikeygen recipe
bump metadata  version
Merge pull request #2 from craiganderson/master

bringing in updates from stable/havana