zuul: layout: Prevent ansible-hardening openSUSE job to run on pre-Pike
zuul: layout: Prevent ansible-hardening openSUSE job to run on pre-Pike

openSUSE support has been added in the Pike release, so do not allow it
to run on older releases.

Change-Id: I43704025d638e65de036cbb9fcde00e8c04ad7bc

openstack-infra/project-config,openstack-infra/project-config