Remove replaces tag from the contrail-openstack-control
to allow contrail-dns package to brign in new upstart and
supervisor ini files.

Closes-Bug: 1398264

Change-Id: I336ee43223b6b6ff9ac866bab3d2794f3bd682b9
Merge "Remove replaces tag from the contrail-openstack-control to allow contrail-dns package to brign in new upstart and supervisor ini files."