Test

Change the hls_aof_ratio to 2.1 #1465

Job	Run time
multiple-arch-armv7	5m 50s
multiple-arch-aarch64	5m 41s
cygwin64-cache	2m 47s
utest-regression-blackbox-test	5m 2s
fast	1s
cygwin64	7m 41s
build-ubuntu16	1m 43s
build-ubuntu18	1m 43s
build-centos7	2m 21s
build-cross-aarch64	2m 36s
build-cross-arm	2m 37s
build-ubuntu20	1m 40s
coverage	2m 19s
multiple-arch-amd64	1m 19s
test-done	1s
	43m 21s

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