In the upcoming puppet keystone release, the default is being switched
to fernet. This change updates packstack to properly handle the fernet
provider configuration for keystone and makes it the new default.
Since the upstream will be enabling the fernet token setup by default,
packstack needs to properly turn off the fernet setup when using uuid.
Change-Id: Id9f6d54e7e5190c3a01f60c511d8a470436bff7d
14ee418491