Allow instance migration to a new project. #4483

Job	Run time
Canonical CLA signed and Signed-off-by (DCO)	11s
js-tests	1m 5s
check-inclusive-naming	9s
e2e-tests (5.0/edge, chromium)	10m 17s
e2e-tests (5.0/edge, firefox)	13m 26s
lint	1m 18s
e2e-tests (5.21/edge, chromium)	12m 44s
e2e-tests (5.21/edge, firefox)	17m 26s
e2e-tests (latest/edge, chromium)	14m 5s
e2e-tests (latest/edge, firefox)	17m 21s
merge-e2e-reports	13s
	1h 28m 15s

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