Enable security configuration for barbican grenade gate
Enable security configuration for barbican grenade gate

The grenade gate attempts to run the barbican-tempest-plugin
tests, but the proper configuration of security features needs
to happen before the tests will pass. The configuration
happens in barbican-tempest-plugin's pre_test_hook.sh.

Change-Id: Id8c5fa6c59e1036958a8954305747c60292462dc

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