Align defaults for SoftwareConfigTransport
Align defaults for SoftwareConfigTransport

It should be POLL_SERVER_HEAT as we no longer use Heat CFN.
This follows up I639f5626013cd0ef61c1f9066fab7a7b8806287f

Change-Id: I2ba1be7a5c72a34f67dbf9a79abef66213ff6af6
Signed-off-by: Bogdan Dobrelya <a2228ae37d00d1cbd5a93e53f3e1e5aef21d5900@redhat.com>

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