vendor updates

vendor/k8s.io/kubernetes/test/fixtures/doc-yaml/user-guide/downward-api/dapi-pod.yaml

@@ -5,7 +5,7 @@ metadata:
 spec:
   containers:
     - name: test-container
-      image: gcr.io/google_containers/busybox
+      image: k8s.gcr.io/busybox
       command: [ "/bin/sh", "-c", "env" ]
       env:
         - name: MY_POD_NAME

vendor/k8s.io/kubernetes/test/fixtures/doc-yaml/user-guide/liveness/exec-liveness.yaml

@@ -10,7 +10,7 @@ spec:
     - /bin/sh
     - -c
     - echo ok > /tmp/health; sleep 10; rm -rf /tmp/health; sleep 600
-    image: gcr.io/google_containers/busybox
+    image: k8s.gcr.io/busybox
     livenessProbe:
       exec:
         command:

vendor/k8s.io/kubernetes/test/fixtures/doc-yaml/user-guide/liveness/http-liveness.yaml

@@ -8,7 +8,7 @@ spec:
   containers:
   - args:
     - /server
-    image: gcr.io/google_containers/liveness
+    image: k8s.gcr.io/liveness
     livenessProbe:
       httpGet:
         path: /healthz

vendor/k8s.io/kubernetes/test/fixtures/doc-yaml/user-guide/multi-pod.yaml

@@ -42,7 +42,7 @@ metadata:
 spec:
   containers:
   - name: kubernetes-serve-hostname
-    image: gcr.io/google_containers/serve_hostname
+    image: k8s.gcr.io/serve_hostname
     resources:
       limits:
         cpu: "1"

vendor/k8s.io/kubernetes/test/fixtures/doc-yaml/user-guide/secrets/secret-env-pod.yaml

@@ -5,7 +5,7 @@ metadata:
 spec:
   containers:
     - name: test-container
-      image: gcr.io/google_containers/busybox
+      image: k8s.gcr.io/busybox
       command: [ "/bin/sh", "-c", "env" ]
       env:
         - name: MY_SECRET_DATA

vendor/k8s.io/kubernetes/test/fixtures/doc-yaml/user-guide/secrets/secret-pod.yaml

@@ -5,7 +5,7 @@ metadata:
 spec:
   containers:
     - name: test-container
-      image: gcr.io/google_containers/mounttest:0.8
+      image: k8s.gcr.io/mounttest:0.8
       command: [ "/mt", "--file_content=/etc/secret-volume/data-1" ]
       volumeMounts:
           # name must match the volume name below