At the moment Horizon plugins' local_settings are being symlinked
to the enabled folder, which is not entirely correct.
Today Horizon will produce a warning message during compression in
case a settings file will be present in enabled folder, ie:
WARNING:root:Skipping openstack_dashboard.local.enabled._1699_orchestration_settings because it doesn't have DASHBOARD, PANEL, PANEL_GROUP, or FEATURE defined.
To avoid such warning settings files are being search and symlinked
independently now.
Depends-On: https://review.opendev.org/c/openstack/openstack-ansible-openstack_hosts/+/930272
Change-Id: I5b50bad91f00cd4f5b5c36e30753e88425cf9d13