Add support for SUSE based distributions. We also update the bindep.txt,
run_tests.sh and Vagrantfile files from the openstack-ansible-tests
repository except that we use Leap 42.1 because Leap 42.2 does not work
as expected with the currently released bindep (2.3.0).
Change-Id: I5fb94a7cedf9d28816184e3eadd88e42f93295c2
09406de86b