Merge pull request #3233 from github/mbg/getOptionalEnvVar #1822

Job	Run time
Upload debug artifacts after failure in analyze (linked)	3m 10s
Upload debug artifacts after failure in analyze (nightly-latest)	3m 20s
Upload debug artifacts after failure in analyze (stable-v2.20.3)	2m 3s
Upload debug artifacts after failure in analyze (default)	3m 8s
Download and check debug artifacts after failure in analyze	12s
	11m 53s

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