Remove ovs-dvr yaml when OVN is enabled
Remove ovs-dvr yaml when OVN is enabled

Using neutron-ovs-dvr.yaml is causing overcloud deployment to fail
when OVN is enabled.

Change-Id: I1a9be8717f9a6fc39d0b7e321692f2599691a2b3
(cherry picked from commit 7f674b327e4865d0631d0c247c14bff993324c76)

redhat-openstack/infrared,redhat-openstack/infrared,redhat-openstack/infrared