In the managed domain test suite, there is no testing of a slave HC joining a domain using our *standard config files*. There is, of course, already testing of slaves joining a domain, but those tests use custom testsuite-specific configurations. DefaultConfigSmokeTestCase tests the "domain.xml + host.xml" config set, so a master running servers is tested. But "domain.xml + host-master.xml" is not tested nor is "host-slave.xml". These latter two can be tested in combination, and that closes the hole. This additional testing would have caught the https://bugzilla.redhat.com/show_bug.cgi?id=961273 regression.
QA_ACK granted, AS TS enrichment.