Add the centos package details for the starlingx_dashboard.
starlingx_dashboard/enabled/__init__.py is already provided by the
openstack-dashboard package, so that file will be removed from this
package.
Story: 2002891
Task: 24821
Change-Id: I7b890a2adb24627dfba4e73ab968ef1b3f2ac576
Signed-off-by: David Sullivan <david.sullivan@windriver.com>