Use 'openstack' command-client commands to replace nova commands
Use 'openstack' command-client commands to replace nova commands

Change-Id: Ic7ea5a2becb0a7d616e1baf893995441bdc789f9
Implements: blueprint use-openstack-command

openstack/openstack-manuals,openstack/openstack-manuals,openstack/openstack-manuals,openstack/openstack-manuals