Add init container to GFD for handling imex nodes config mount #653

Job	Run time
helm-lint	7s
validate-csv	24s
validate-helm-values	26s
go-build	1m 32s
go-check	1m 56s
unit tests	50s
build-gpu-operator-validator (ubi9)	10m 40s
build-gpu-operator (ubi9)	15m 55s
e2e-tests-containerd	51m 46s
e2e-tests-nvidiadriver	34m 46s
	1h 58m 22s

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