[servingsys] Do not run test on travis

Apparantly, even the advertisers do geoblocking now!?
From the US, this isn't outright blocked, but there are no videos returned.
[gametrailers/mtv] Fix pre-3.x compatibility function for find_xpath_attr

Fixes #2189
[hotnewhiphop] Retrieve media key
[Wimp] Use new URL relay method
[mtv] Update tests and xpath function for new title extraction
[ringtv] Fix and add news extraction