webhook: support elasticquota enable update resource key #8676

Job	Run time
golangci-lint	4m 27s
unit-tests(Check Go modules)	28s
unit-tests(Check manifests)	34s
unit-tests(Check auto-generated codes)	2m 42s
unit-tests(Verify gofmt)	37s
unit-tests(Verify govet)	1m 23s
unit-tests(Run Go build)	1m 34s
unit-tests(Run Go test)	5m 39s
build-and-push (koordlet)	3m 32s
build-and-push (koord-manager)	2m 14s
build-and-push (koord-scheduler)	3m 30s
build-and-push (koord-descheduler)	3m 11s
	29m 51s

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