Test

For Edge, only support RTMP or HTTP-FLV. #1907

Job	Run time
build-ubuntu16	3m 4s
build-ubuntu18	3m 10s
build-ubuntu20	1m 51s
build-centos7	6m 0s
multiple-arch-amd64	1m 20s
build-cross-aarch64	3m 42s
multiple-arch-armv7	7m 11s
coverage	3m 26s
multiple-arch-aarch64	6m 15s
build-cross-arm	4m 8s
utest-regression-blackbox-test	9m 2s
test-done	3s
	49m 12s

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