koordlet: add metrics about be used cpu and node used memory #8560

Job	Run time
golangci-lint	4m 12s
unit-tests(Check Go modules)	34s
unit-tests(Check manifests)	39s
unit-tests(Check auto-generated codes)	2m 35s
unit-tests(Verify gofmt)	32s
unit-tests(Verify govet)	1m 8s
unit-tests(Run Go build)	1m 16s
unit-tests(Run Go test)	5m 14s
build-and-push (koordlet)	3m 35s
build-and-push (koord-manager)	2m 39s
build-and-push (koord-scheduler)	3m 2s
build-and-push (koord-descheduler)	2m 50s
	28m 16s

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