Add an instrumentation-arg for skipping rate checking in media mts. Test: make mts; mts-tradefed run mts -m CtsMediaTestCases -t android.media.cts.VideoDecoderPerfTest#testHevcOther0Perf3840x2160 Bug: 143245881 Change-Id: I637e3e2507e792b572988747496d88e695e76482