apis: add host application metric to node metric crd #6630

Job	Run time
golangci-lint	3m 4s
unit-tests(Check Go modules)	1m 38s
unit-tests(Check manifests)	1m 56s
unit-tests(Check auto-generated codes)	6m 54s
unit-tests(Verify gofmt)	1m 3s
unit-tests(Verify govet)	7m 46s
unit-tests(Run Go build)	4m 59s
unit-tests(Run Go test)	5m 56s
build-and-push (koordlet)	5m 23s
build-and-push (koord-manager)	3m 45s
build-and-push (koord-scheduler)	5m 20s
build-and-push (koord-descheduler)	4m 28s
	52m 12s

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