transport: modify assertion to allow for data sessions
transport: modify assertion to allow for data sessions

EricssonResearch/openwebrtc,shoreflyer/openwebrtc,danielwegener/openwebrtc,shoreflyer/openwebrtc,EricssonResearch/openwebrtc,danielwegener/openwebrtc,adozenlines/openwebrtc,alessandrod/openwebrtc,EricssonResearch/openwebrtc,alessandrod/openwebrtc,danielwegener/openwebrtc,alessandrod/openwebrtc,philn/openwebrtc,shoreflyer/openwebrtc,alessandrod/openwebrtc,stefhak/openwebrtc,philn/openwebrtc,adozenlines/openwebrtc,stefhak/openwebrtc,EricssonResearch/openwebrtc,shoreflyer/openwebrtc,philn/openwebrtc,philn/openwebrtc,adozenlines/openwebrtc,adozenlines/openwebrtc,shoreflyer/openwebrtc,danielwegener/openwebrtc,adozenlines/openwebrtc,philn/openwebrtc,multipath-rtp/openwebrtc,stefhak/openwebrtc,pererikb/openwebrtc,danielwegener/openwebrtc,alessandrod/openwebrtc,EricssonResearch/openwebrtc,multipath-rtp/openwebrtc,stefhak/openwebrtc,pererikb/openwebrtc,multipath-rtp/openwebrtc,EricssonResearch/openwebrtc,EricssonResearch/openwebrtc,multipath-rtp/openwebrtc,multipath-rtp/openwebrtc,pererikb/openwebrtc,alessandrod/openwebrtc,multipath-rtp/openwebrtc,shoreflyer/openwebrtc,adozenlines/openwebrtc,philn/openwebrtc,shoreflyer/openwebrtc,pererikb/openwebrtc,pererikb/openwebrtc,pererikb/openwebrtc,pererikb/openwebrtc,danielwegener/openwebrtc,multipath-rtp/openwebrtc,philn/openwebrtc,stefhak/openwebrtc,stefhak/openwebrtc