Add workaround for dashboard issue on Ubuntu
Add workaround for dashboard issue on Ubuntu

I added a workaround for a dashboard packaging bug on Ubuntu.

Change-Id: Ia4fc346182dcdf787b7e18d64a634ceebb91a761

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