validate: Blacklist test that do not preroll after pause
Blacklist: validate.rtsp2.playback.seek_forward.GH1_00094_1920x1280_MTS validate.rtsp.playback.seek_backward.GH1_00094_1920x1280_MTS validate.rtsp2.playback.seek_backward.GH1_00094_1920x1280_MTS
Change-Id: I7b0b06bfd2c8b5f8b1b01c1730f9ce65522cd67a