Disable tunnelled migration
Disable tunnelled migration

Tunnelled migration is not compatible with post_copy as pointed by the
related BZ. It was disabled up until we fixed the puppet namespace in
I845bc3c533e55dd5398d6a74ee48762cfd32b8a9

Closes-bug: 1930599
Related: https://bugzilla.redhat.com/show_bug.cgi?id=1967130
Change-Id: Ia1a03cf798436b5f9865b527a8c742d13bbff180

openstack/tripleo-heat-templates,openstack/tripleo-heat-templates