add flaky tags to the test, to reduce the chances of false positive f… #800

Job	Run time
code-formatting	29s
ubuntu-latest-bootstrap	4m 31s
ubuntu-latest-build	2m 47s
ubuntu-latest-vab-can-live-anywhere	1m 16s
v-compiles-os-android	1m 16s
windows-latest-build	4m 19s
	14m 38s

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