scheduler: register pod delete event for resource plugin #8614

Job	Run time
golangci-lint	4m 5s
unit-tests(Check Go modules)	53s
unit-tests(Check manifests)	1m 13s
unit-tests(Check auto-generated codes)	3m 38s
unit-tests(Verify gofmt)	49s
unit-tests(Verify govet)	5m 21s
unit-tests(Run Go build)	3m 44s
unit-tests(Run Go test)	8m 41s
build-and-push (koordlet)	3m 30s
build-and-push (koord-manager)	2m 10s
build-and-push (koord-scheduler)	3m 7s
build-and-push (koord-descheduler)	2m 53s
	40m 4s

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