Test

Proxy: Support proxy server for SRS. v7.0.16 #3580

Job	Run time
cygwin64-cache	1m 42s
multiple-arch-aarch64	22m 40s
multiple-arch-armv7	22m 16s
utest-regression-blackbox-test	9m 36s
fast	1s
cygwin64	14m 28s
build-centos7	4m 56s
build-ubuntu16	3m 6s
build-cross-aarch64	5m 9s
build-cross-arm	5m 15s
build-ubuntu18	3m 10s
build-ubuntu20	3m 32s
coverage	3m 34s
multiple-arch-amd64	2m 24s
test-done	1s
	1h 41m 50s

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