Fix problem with non-strict mode in URL-Signing
Steps to reproduce
Steps to reproduce:
1. Configure Wowza Stream security to work with Opencast
2. Use Adaptive Streaming (HLS, DASH) - what still needs to be implemented (patch in progress)
3. The server URLs that should be checked do not match as Wowza does only deliver a partial URL without schema and server.
4. even switching to non STRICT mode does not help, as still only the end of the URL is matching not the beginning.