Fix openstack-dashboard/local_settings file name
Fix openstack-dashboard/local_settings file name

Corrects the openstack-dashboard/local_settings.py
file name for rdo distributions to
openstack-dashboard/local_settings

Change-Id: Idfced3923c7691c16181c875d4dd307b8f073ef7
Closes-Bug: #1505503

openstack/openstack-manuals,openstack/openstack-manuals,AlekhyaMallina-Vedams/openstack-manuals,AlekhyaMallina-Vedams/openstack-manuals,openstack/openstack-manuals,AlekhyaMallina-Vedams/openstack-manuals,openstack/openstack-manuals