Fixing manifest.in
Fixing manifest.in

MANIFEST.in currently did not reference tuskar_ui/, and instead only
covered horizon/ and openstack_dashboard/, most likely a remnant of when
the code was forked from horizon.

Change-Id: I9b3e2a015651c8a1ee5b7c08121f66bd70328d9f

rdo-management/tuskar-ui,rdo-management/tuskar-ui,rdo-management/tuskar-ui,rdo-management/tuskar-ui