Merge pull request #2694 from emqx/dev/1.9.0 #20

Job	Run time
set_version	1s
build_emqx_for_test / build	4m 3s
check_package_version / check_package_version	58s
build_ce_dashboard_package	0s
build_ee_dashboard_package / build	3m 28s
	8m 30s

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