Revert "Make neutron-tempest-plugin-designate-scenario non voting"

This reverts commit 7c4473d55c31f147154cc60487859e5db05ab5e9.

Reason for revert: Should be fixed on the Designate side with
                   the Depends-on patch.

Depends-On: https://review.opendev.org/c/openstack/designate/+/927792

Change-Id: If549f21a38def48d094adea6cbfaa67f1855da17
1 file changed