kubernetes: Flip pod's ready condition when node is unreachable

Getting hit by the new policy on skydns I shut down the host where it was running and waited for an automatic relocation. After a while (~1h) I manually stopped the pod and it was launched on a new one, as expected.

If host status is NotReady pods should be moved.

Here is the pod status when host was down :

{
    "kind": "Pod",
    "apiVersion": "v1beta3",
    "metadata": {
        "name": "kube-dns-787nc",
        "generateName": "kube-dns-",
        "namespace": "default",
        "selfLink": "/api/v1beta1/pods/kube-dns-787nc?namespace=default",
        "uid": "c32c0c6f-fb0a-11e4-83a8-42010af0b423",
        "resourceVersion": "36141",
        "creationTimestamp": "2015-05-15T14:00:37Z",
        "labels": {
            "k8s-app": "kube-dns",
            "kubernetes.io/cluster-service": "true"
        },
        "annotations": {
            "kubernetes.io/created-by": "{\"kind\":\"SerializedReference\",\"apiVersion\":\"v1beta3\",\"reference\":{\"kind\":\"ReplicationController\",\"namespace\":\"default\",\"name\":\"kube-dns\",\"uid\":\"c3274113-fb0a-11e4-83a8-42010af0b423\",\"apiVersion\":\"v1beta3\",\"resourceVersion\":\"136\"}}"
        }
    },
    "spec": {
        "volumes": [
            {
                "name": "dns-token",
                "hostPath": null,
                "emptyDir": null,
                "gcePersistentDisk": null,
                "awsElasticBlockStore": null,
                "gitRepo": null,
                "secret": {
                    "secretName": "token-system-dns"
                },
                "nfs": null,
                "iscsi": null,
                "glusterfs": null
            }
        ],
        "containers": [
            {
                "name": "etcd",
                "image": "gcr.io/google_containers/etcd:2.0.9",
                "command": [
                    "/usr/local/bin/etcd",
                    "-listen-client-urls",
                    "http://127.0.0.1:2379,http://127.0.0.1:4001",
                    "-advertise-client-urls",
                    "http://127.0.0.1:2379,http://127.0.0.1:4001",
                    "-initial-cluster-token",
                    "skydns-etcd"
                ],
                "resources": {},
                "terminationMessagePath": "/dev/termination-log",
                "imagePullPolicy": "IfNotPresent",
                "capabilities": {}
            },
            {
                "name": "kube2sky",
                "image": "gcr.io/google_containers/kube2sky:1.4",
                "args": [
                    "-domain=kubernetes.local",
                    "-kubecfg_file=/etc/dns_token/kubeconfig"
                ],
                "resources": {},
                "volumeMounts": [
                    {
                        "name": "dns-token",
                        "readOnly": true,
                        "mountPath": "/etc/dns_token"
                    }
                ],
                "terminationMessagePath": "/dev/termination-log",
                "imagePullPolicy": "IfNotPresent",
                "capabilities": {}
            },
            {
                "name": "skydns",
                "image": "gcr.io/google_containers/skydns:2015-03-11-001",
                "args": [
                    "-machines=http://localhost:4001",
                    "-addr=0.0.0.0:53",
                    "-domain=kubernetes.local."
                ],
                "ports": [
                    {
                        "name": "dns",
                        "containerPort": 53,
                        "protocol": "UDP"
                    },
                    {
                        "name": "dns-tcp",
                        "containerPort": 53,
                        "protocol": "TCP"
                    }
                ],
                "resources": {},
                "livenessProbe": {
                    "exec": {
                        "command": [
                            "/bin/sh",
                            "-c",
                            "nslookup foobar 127.0.0.1 \u0026\u003e /dev/null; echo ok"
                        ]
                    },
                    "initialDelaySeconds": 30,
                    "timeoutSeconds": 5
                },
                "terminationMessagePath": "/dev/termination-log",
                "imagePullPolicy": "IfNotPresent",
                "capabilities": {}
            }
        ],
        "restartPolicy": "Always",
        "dnsPolicy": "Default",
        "host": "internal-changecommerce-minion-006"
    },
    "status": {
        "phase": "Running",
        "Condition": [
            {
                "type": "Ready",
                "status": "False"
            }
        ],
        "hostIP": "104.155.83.214",
        "podIP": "10.244.6.2",
        "containerStatuses": [
            {
                "name": "etcd",
                "state": {
                    "running": {
                        "startedAt": "2015-05-15T18:25:16Z"
                    }
                },
                "lastState": {
                    "termination": {
                        "exitCode": 0,
                        "startedAt": "2015-05-15T15:12:48Z",
                        "finishedAt": "2015-05-15T18:23:57Z",
                        "containerID": "docker://1519a9ff8807f84ce55df761164460c66ba4a0e3f2eec0da7c650c9d121f4956"
                    }
                },
                "ready": true,
                "restartCount": 1,
                "image": "gcr.io/google_containers/etcd:2.0.9",
                "imageID": "docker://b6b9a86dc06aa1361357ca1b105feba961f6a4145adca6c54e142c0be0fe87b0",
                "containerID": "docker://43ab1b874434e97b868ed3e79437dd5dd0225a504b24e31a9490edb11f70cbfd"
            },
            {
                "name": "kube2sky",
                "state": {
                    "running": {
                        "startedAt": "2015-05-15T18:36:15Z"
                    }
                },
                "lastState": {
                    "termination": {
                        "exitCode": 255,
                        "startedAt": "2015-05-15T18:36:05Z",
                        "finishedAt": "2015-05-15T18:36:06Z",
                        "containerID": "docker://d58e3371d512551275314f45417a0ac0cb98897aa7296a7d132280e080e3b3d3"
                    }
                },
                "ready": false,
                "restartCount": 15,
                "image": "gcr.io/google_containers/kube2sky:1.4",
                "imageID": "docker://3df83f1bccbf18ab59cd64da32cda26b4f56ae0cd6bb6e374477a60468f04232",
                "containerID": "docker://919a5faa8a89dba0e975165995d32ba60b873d2b4e96a590fe840dee1b28a122"
            },
            {
                "name": "skydns",
                "state": {
                    "running": {
                        "startedAt": "2015-05-15T18:25:20Z"
                    }
                },
                "lastState": {
                    "termination": {
                        "exitCode": 2,
                        "startedAt": "2015-05-15T18:00:20Z",
                        "finishedAt": "2015-05-15T18:23:57Z",
                        "containerID": "docker://40a68db359a90b3aedcefbd960f51347841f21d65773140509dc045664b1a714"
                    }
                },
                "ready": true,
                "restartCount": 9,
                "image": "gcr.io/google_containers/skydns:2015-03-11-001",
                "imageID": "docker://791ddf327076e0fd35a1125568a56c05ee1f1dfd7a165c74f4d489d8a5e65ac5",
                "containerID": "docker://dd53be5827169136e55d768ac7d05a5c3664a2d1ba4c4b377b1d862f78993ca1"
            }
        ]
    }
}