Test

Support set the ice-ufrag and ice-pwd for connectivity check #1428

Job	Run time
cygwin64-cache	3m 54s
utest-regression-blackbox-test	6m 54s
multiple-arch-aarch64	8m 1s
multiple-arch-armv7	8m 39s
cygwin64	7m 44s
fast	3s
build-ubuntu20	2m 39s
build-centos7	3m 32s
build-cross-arm	3m 40s
build-ubuntu16	2m 31s
build-cross-aarch64	3m 32s
build-ubuntu18	2m 20s
coverage	3m 18s
multiple-arch-amd64	2m 2s
test-done	2s
	58m 51s

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