Made DTLS/SCTP equivalent to UDP/DTLS/SCTP when comparing session descs in tests.
Made DTLS/SCTP equivalent to UDP/DTLS/SCTP when comparing session descs in tests.

Cr-Original-Commit-Position: 972c6d2dc6dd5efdad1377c0d224e03eb8f276f7@{#8478}
Cr-Mirrored-From: https://chromium.googlesource.com/external/webrtc
Cr-Mirrored-Commit: d7b6165483e7c67831bf7c161168b80be21ec3be

sippet/talk,sippet/talk,sippet/talk,sippet/talk,dcpang/fatline-libjingle,dcpang/fatline-libjingle,dcpang/fatline-libjingle,sippet/talk,dcpang/fatline-libjingle,dcpang/fatline-libjingle