etcd-metrics Pod is continuously logging "grpc: addrConn.createTransport failed to connect"

Issue

• On OpenShift Container Platform, every "etcd" Pod is continuously logging the lines below within the etcd-metrics container:

  {"level":"info","ts":"2022-07-11T13:57:37.975Z","caller":"zapgrpc/zapgrpc.go:174","msg":"[core] Subchannel Connectivity change to CONNECTING"}
  {"level":"info","ts":"2022-07-11T13:57:37.976Z","caller":"zapgrpc/zapgrpc.go:174","msg":"[core] Subchannel picks a new address \"127.0.0.1:23790\" to connect"}
  {"level":"info","ts":"2022-07-11T13:57:37.977Z","caller":"zapgrpc/zapgrpc.go:174","msg":"[balancer] base.baseBalancer: handle SubConn state change: 0xc00017e150, CONNECTING"}
  {"level":"warn","ts":"2022-07-11T13:57:37.977Z","caller":"zapgrpc/zapgrpc.go:191","msg":"[core] grpc: addrConn.createTransport failed to connect to {127.0.0.1:23790 127.0.0.1 <nil> 0 <nil>}. Err: connection error: desc = 
  \"transport: Error while dialing dial tcp 127.0.0.1:23790: connect: connection refused\". Reconnecting..."}
  {"level":"info","ts":"2022-07-11T13:57:37.977Z","caller":"zapgrpc/zapgrpc.go:174","msg":"[core] Subchannel Connectivity change to TRANSIENT_FAILURE"}
  {"level":"info","ts":"2022-07-11T13:57:37.977Z","caller":"zapgrpc/zapgrpc.go:174","msg":"[balancer] base.baseBalancer: handle SubConn state change: 0xc00017e150, TRANSIENT_FAILURE"}