check if pod is ready before pinger

when node crash, kubelet will not update pod status, goldpinger on
crashed node will not work, but other goldpinger instance will continue
ping the bad one.

this patch remove the not ready goldpinger instance from pinger list.

```
NAME                                READY   STATUS        RESTARTS   AGE
goldpinger-8749c476d-5n7lt   1/1     Running       0          78d
goldpinger-8749c476d-bj752   0/1     Terminating   0          78d
goldpinger-8749c476d-bzf6t   1/1     Running       0          78d
goldpinger-8749c476d-dv28g   1/1     Running       0          4h25m
goldpinger-8749c476d-gwhw4   1/1     Running       0          4h25m
goldpinger-8749c476d-prgwd   1/1     Running       0          78d

{
  "conditions": [
    {
      "lastProbeTime": null,
      "lastTransitionTime": "2023-03-29T12:38:40Z",
      "status": "True",
      "type": "Initialized"
    },
    {
      "lastProbeTime": null,
      "lastTransitionTime": "2023-06-16T02:24:10Z",
      "message": "containers with unready status: [goldpinger]",
      "reason": "ContainersNotReady",
      "status": "False",
      "type": "Ready"
    },
    {
      "lastProbeTime": null,
      "lastTransitionTime": "2023-06-16T02:24:10Z",
      "message": "containers with unready status: [goldpinger]",
      "reason": "ContainersNotReady",
      "status": "False",
      "type": "ContainersReady"
    },
    {
      "lastProbeTime": null,
      "lastTransitionTime": "2023-03-29T12:38:39Z",
      "status": "True",
      "type": "PodScheduled"
    }
  ],
  "containerStatuses": [
    {
      "containerID": "docker://xxx",
      "image": "xxx/goldpinger:v3.5.0",
      "imageID": "docker-pullable://xxx/goldpinger@sha256:xxx",
      "lastState": {},
      "name": "goldpinger",
      "ready": false,
      "restartCount": 0,
      "started": true,
      "state": {
        "running": {
          "startedAt": "2023-03-29T12:38:56Z"
        }
      }
    }
  ],
  "hostIP": "1.2.3.3",
  "phase": "Running",
  "podIP": "1.2.3.4",
  "podIPs": [
    {
      "ip": "1.2.3.4"
    }
  ],
  "qosClass": "Burstable",
  "startTime": "2023-03-29T12:38:40Z"
}
```

Signed-off-by: j4ckstraw <[email protected]>

Author: j4ckstraw

go.mod

@@ -3,32 +3,23 @@ module github.com/bloomberg/goldpinger/v3
 go 1.15
 
 require (
-	github.com/beorn7/perks v0.0.0-20180321164747-3a771d992973 // indirect
 	github.com/cespare/xxhash v1.1.0
 	github.com/go-openapi/errors v0.20.2
 	github.com/go-openapi/loads v0.19.5
 	github.com/go-openapi/runtime v0.19.26
 	github.com/go-openapi/spec v0.19.8
 	github.com/go-openapi/strfmt v0.20.0
-	github.com/go-openapi/swag v0.19.9
+	github.com/go-openapi/swag v0.22.3
 	github.com/go-openapi/validate v0.19.10
 	github.com/jessevdk/go-flags v1.4.0
-	github.com/matttproud/golang_protobuf_extensions v1.0.1 // indirect
-	github.com/prometheus/client_golang v0.9.1
-	github.com/prometheus/common v0.0.0-20181020173914-7e9e6cabbd39 // indirect
-	github.com/prometheus/procfs v0.0.0-20181005140218-185b4288413d // indirect
+	github.com/prometheus/client_golang v1.14.0
 	github.com/stuartnelson3/go-rendezvous v0.2.0
-	go.uber.org/zap v1.14.1
-	golang.org/x/crypto v0.0.0-20210220033148-5ea612d1eb83 // indirect
+	go.uber.org/zap v1.19.0
 	golang.org/x/image v0.0.0-20190802002840-cff245a6509b
-	golang.org/x/lint v0.0.0-20200302205851-738671d3881b // indirect
-	golang.org/x/net v0.0.0-20210520170846-37e1c6afe023
-	golang.org/x/oauth2 v0.0.0-20200107190931-bf48bf16ab8d // indirect
-	golang.org/x/term v0.0.0-20210220032956-6a3ed077a48d // indirect
-	golang.org/x/time v0.0.0-20210723032227-1f47c861a9ac // indirect
-	honnef.co/go/tools v0.0.1-2020.1.3 // indirect
-	k8s.io/api v0.19.14
-	k8s.io/apimachinery v0.19.14
-	k8s.io/client-go v0.19.14
-	k8s.io/utils v0.0.0-20210819203725-bdf08cb9a70a
+	golang.org/x/net v0.8.0
+	k8s.io/api v0.27.3
+	k8s.io/apimachinery v0.27.3
+	k8s.io/client-go v0.27.3
+	k8s.io/kubectl v0.27.3
+	k8s.io/utils v0.0.0-20230209194617-a36077c30491
 )