feat: make cmd and environment attributes stampable #837

Job	Run time
matrix-prep-bazelversion	5s
test-auth	2m 37s
test (ubuntu-latest, 6.2.0, ., true)	4m 6s
test (ubuntu-latest, 6.2.0, ., false)	3m 36s
test (ubuntu-latest, 6.2.0, e2e/custom_registry, false)	5m 41s
test (ubuntu-latest, 6.2.0, e2e/wasm, false)	4m 20s
test (ubuntu-latest, 6.2.0, e2e/smoke, true)	4m 56s
test (ubuntu-latest, 6.2.0, e2e/smoke, false)	3m 23s
test (ubuntu-latest, 6.2.0, e2e/crane_as_registry, true)	3m 43s
test (ubuntu-latest, 6.2.0, e2e/crane_as_registry, false)	2m 49s
test (ubuntu-latest, 5.3.2, ., false)	3m 14s
test (ubuntu-latest, 5.3.2, e2e/custom_registry, false)	3m 55s
test (ubuntu-latest, 5.3.2, e2e/wasm, false)	2m 51s
test (ubuntu-latest, 5.3.2, e2e/smoke, false)	3m 13s
test (ubuntu-latest, 5.3.2, e2e/crane_as_registry, false)	4m 46s
	53m 15s

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