Merge pull request #21214 from RudyLu/music/Bug1032037-disable_playerTest_travis

Bug 1032037 - perma-red on Travis for Music player tests - Playback.
r=dominickuo
a=test-only
(cherry picked from commit ef1599767fb41f9a417a77a56f88c95912687a70)

Conflicts:
	shared/test/integration/travis-manifest.json