Revert "Remove 'skip' decorator from working test"

This reverts commit ae415de566d06b4e055187ea94e790db88589494.

As per bugzilla bug 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 should be re-opened.
Merge pull request #1252 from Ichimonji10/role-names

Revert "Remove 'skip' decorator from working test"