Support shorthand forms for `getRemoteConfig` #3975

Job	Run time
Upload debug artifacts after failure in analyze (nightly-latest)	1m 55s
Upload debug artifacts after failure in analyze (linked)	2m 5s
Upload debug artifacts after failure in analyze (stable-v2.20.3)	2m 7s
Upload debug artifacts after failure in analyze (default)	1m 57s
Download and check debug artifacts after failure in analyze	8s
	8m 12s

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