https://bugzilla.redhat.com/show_bug.cgi?id=739640

From the Web UI you can add a service without specifying a service name. A service called "undefined" is added.

undefined/myhost.testrelm@TESTRELM

Steps to Reproduce:
- Add a new host
- Services --> Add -->
- Do not select one of the predefined services and do not enter a custom service name.
- Select the new host and Add.

Actual results:
invalid service is added with service name "undefined"

Expected results:
Error stating service name is required.