Add swift roles into cluster_ha

the swift roles used to be in cluster_ha_full, but the file was removed in
I964beb280a1e6453cd8864dbfa356da12dbbadcd . In order to ensure that the code
 is not lost as it is used in some custom cases we will add it into cluster_ha.

There is no expectation to test or maintain this at this time, this is only to
ensure that the code is not lost or becomes hard to find.

Change-Id: I5c0cbd1dbffaf34649a32de34fb93c4de20d09f0