modify test to test shortened delegations in shorten and master zone


git-svn-id: https://gnunet.org/svn/gnunet@31017 140774ce-b5e7-0310-ab8b-a85725594a96
- allow $-expressions anywhere in the given string


git-svn-id: https://gnunet.org/svn/gnunet@31018 140774ce-b5e7-0310-ab8b-a85725594a96