[bug] Memory Leak of Operator.

[acekingke]

Describe the problem

To Reproduce

1. use pprof in operator , and the code in cmd/manager/main.go

	go func() {
		ip := "0.0.0.0:6060"
		if err := http.ListenAndServe(ip, nil); err != nil {
			fmt.Printf("start pprof failed on %s\n", ip)
			os.Exit(1)
		}
	}()

2. kubectl apply -f xxxx
3. see the alloc objets in localhost:6060 , found it is increasing.

Expected behavior

Environment:

• RadonDB MySQL version: operator