Revert "Remove 'skip' decorator from working test"

This reverts commit ae415de566d06b4e055187ea94e790db88589494.

As per [bugzilla bug 1112657](https://bugzilla.redhat.com/show_bug.cgi?id=1112657), it should be possible to use a wide variety of
characters in a role's name. For example, the following should be valid role
names:

* foo@bar.com
* チーズ

This issue was fixed, but it appears that a regression has occurred. [Bugzilla
bug 1112657](https://bugzilla.redhat.com/show_bug.cgi?id=1112657) should be re-opened.