Remove usage of external host name.

The name "www.ansible.com" was used as a host, but this required
that DNS forwarding is enabled and configured to test serivces
for hosts that have an IP address but are not host objects in IPA. 
This change set a a host name that lies in the testing domain, and has 
an IP address defined, buth is not added as a host object,
so the forwarding DNS configuration is not needed for this test.