[docs] Add commands to register murano in Keystone
[docs] Add commands to register murano in Keystone

Change-Id: Ie99a38ffe3ffdc3618917a64bff902d2a86fbc6c

satish-avninetworks/murano,satish-avninetworks/murano,DavidPurcell/murano_temp,satish-avninetworks/murano,olivierlemasle/murano,DavidPurcell/murano_temp,olivierlemasle/murano,olivierlemasle/murano,NeCTAR-RC/murano,NeCTAR-RC/murano,NeCTAR-RC/murano,DavidPurcell/murano_temp,openstack/murano,NeCTAR-RC/murano,olivierlemasle/murano,openstack/murano,satish-avninetworks/murano,DavidPurcell/murano_temp