standardise object hash generation across the repo #155

Job	Run time
validate-helm-values	1m 20s
validate-csv	1m 27s
helm-lint	10s
go-check	1m 50s
unit tests	57s
go-build	1m 26s
build-gpu-operator-validator (ubi8)	10m 25s
build-gpu-operator (ubi8)	13m 50s
e2e-tests-containerd	46m 16s
e2e-tests-nvidiadriver	28m 49s
	1h 46m 30s

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