In order to enforce the transition to the new
OpenStack client, added deprecation warnings to the
magnum cluster-list, cluster-show, cluster-update,
cluster-delete, cluster-config, cluster-create,
cluster-template-list, cluster-template-show,
cluster-template-create, cluster-template-delete,
cluster-template-update, ca-sign, ca-rotate,
ca-show and stats-list, commands.
Change-Id: I0103f686e0feb4dad4173ba7aa00768c8e25440d
Partially-Implements: blueprint deprecate-magnum-client
e6b3b270a3