Update Keystone token param (and use PKI instead of UUID)
Update Keystone token param (and use PKI instead of UUID)

token_format is now deprecated, and we change now PKI to be able
to revoke certs.
Note: keystone.token.providers.pki.Provider is the default option
upstream

Close: GH-75

redhat-cip/puppet-openstack-cloud,Prophidys/puppet-openstack-cloud,goneri/puppet-openstack-cloud,Prophidys/puppet-openstack-cloud,redhat-cip/puppet-openstack-cloud,goneri/puppet-openstack-cloud,gwdg/puppet-openstack-cloud,gwdg/puppet-openstack-cloud,Prophidys/puppet-openstack-cloud,redhat-cip/puppet-openstack-cloud,gwdg/puppet-openstack-cloud,gwdg/puppet-openstack-cloud