Final ubuntu install guide fixes
Final ubuntu install guide fixes

nova-network is not needed on the controller.

this will only break things

Change-Id: I203b6d6b56f0d63b83f7ac39869b54862790355f

kairoaraujo/openstack-manuals,saeki-masaki/openstack-manuals,AlekhyaMallina-Vedams/openstack-manuals,openstack/openstack-manuals,potsmaster/openstack-manuals,Akasurde/openstack-manuals,gongysh2004/openstack-manual,saeki-masaki/openstack-manuals,gongysh2004/openstack-manual,openstack/openstack-manuals,AlekhyaMallina-Vedams/openstack-manuals,potsmaster/openstack-manuals,AlekhyaMallina-Vedams/openstack-manuals,openstack/openstack-manuals,kairoaraujo/openstack-manuals,openstack/openstack-manuals,Akasurde/openstack-manuals