Add test for preferred local candidates
Add test for preferred local candidates

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