zheng yin 91609a47a2 Add command information to cinder-manage.rst
Cinder has a command that "cinder-manage backup update_backup_host",
but cinder-manager.rst has no its information. Therefore, I add it.

Change-Id: I7c18ce1d6853117b972f335f386c149f1b0f26e2
2017-01-10 17:33:55 +08:00
..