ST: Support /api/v1/valgrind?check=full|added|changed|new|quick #1613

Job	Run time
multiple-arch-aarch64	22m 12s
cygwin64-cache	2m 0s
utest-regression-blackbox-test	9m 13s
multiple-arch-armv7	20m 34s
fast	1s
cygwin64	14m 35s
build-ubuntu16	3m 11s
build-cross-arm	5m 15s
build-centos7	4m 54s
build-cross-aarch64	5m 9s
build-ubuntu18	3m 7s
build-ubuntu20	3m 38s
coverage	3m 37s
multiple-arch-amd64	2m 18s
test-done	1s
	1h 39m 45s

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