tests: Disable upnp for invalid stun test
tests: Disable upnp for invalid stun test

ahmedammar/skype_farsight2,ahmedammar/skype_farsight2,ahmedammar/skype_farsight2,tieto/farstream,tieto/farstream,kakaroto/farstream,kakaroto/farstream,shadeslayer/farstream,shadeslayer/farstream,kakaroto/farstream,pexip/farstream,pexip/farstream,tieto/farstream,kakaroto/farstream,pexip/farstream,pexip/farstream,tieto/farstream,shadeslayer/farstream,shadeslayer/farstream,tieto/farstream,ahmedammar/skype_farsight2