Replace mock_wait_for_stream with mock_stream_exists to fix URLError: Network is unreachable
Replace mock_wait_for_stream with mock_stream_exists to fix URLError: Network is unreachable

yangjackascd/roundware-server,Karlamon/roundware-server,jslootbeek/roundware-server,IMAmuseum/roundware-server,jslootbeek/roundware-server,eosrei/roundware-server,Karlamon/roundware-server,yangjackascd/roundware-server,probabble/roundware-server,eosrei/roundware-server,probabble/roundware-server,eosrei/roundware-server,yangjackascd/roundware-server,jslootbeek/roundware-server,Karlamon/roundware-server,probabble/roundware-server,IMAmuseum/roundware-server,probabble/roundware-server,eosrei/roundware-server,jslootbeek/roundware-server,IMAmuseum/roundware-server,Karlamon/roundware-server,IMAmuseum/roundware-server,yangjackascd/roundware-server