allow kubectl subcmds to process multiple resources

- use resource.Visit() to recursively process resources, as well as, aggregate
errors where possible

hack/testdata/recursive/deployment/deployment/nginx-broken.yaml

@@ -0,0 +1,18 @@
+apiVersion: extensions/v1beta1
+ind: Deployment
+metadata:
+  name: nginx2-deployment
+  labels:
+    app: nginx2-deployment
+spec:
+  replicas: 2
+  template:
+    metadata:
+      labels:
+        app: nginx2
+    spec:
+      containers:
+      - name: nginx
+        image: gcr.io/google-containers/nginx:1.7.9
+        ports:
+        - containerPort: 80

hack/testdata/recursive/deployment/deployment/nginx.yaml

@@ -0,0 +1,18 @@
+apiVersion: extensions/v1beta1
+kind: Deployment
+metadata:
+  name: nginx1-deployment
+  labels:
+    app: nginx1-deployment
+spec:
+  replicas: 2
+  template:
+    metadata:
+      labels:
+        app: nginx1
+    spec:
+      containers:
+      - name: nginx
+        image: gcr.io/google-containers/nginx:1.7.9
+        ports:
+        - containerPort: 80

hack/testdata/recursive/deployment/nginx.yaml

@@ -0,0 +1,18 @@
+apiVersion: extensions/v1beta1
+kind: Deployment
+metadata:
+  name: nginx0-deployment
+  labels:
+    app: nginx0-deployment
+spec:
+  replicas: 2
+  template:
+    metadata:
+      labels:
+        app: nginx0
+    spec:
+      containers:
+      - name: nginx
+        image: gcr.io/google-containers/nginx:1.7.9
+        ports:
+        - containerPort: 80

hack/testdata/recursive/pod-modify/busybox.yaml

@@ -0,0 +1,16 @@
+apiVersion: v1
+kind: Pod
+metadata:
+  name: busybox0
+  labels:
+    app: busybox0
+    status: replaced
+spec:
+  containers:
+  - image: busybox
+    command:
+      - sleep
+      - "3600"
+    imagePullPolicy: IfNotPresent
+    name: busybox
+  restartPolicy: Always

hack/testdata/recursive/pod-modify/pod/busybox-broken.yaml

@@ -0,0 +1,16 @@
+apiVersion: v1
+ind: Pod
+metadata:
+  name: busybox2
+  labels:
+    app: busybox2
+    status: replaced
+spec:
+  containers:
+  - image: busybox
+    command:
+      - sleep
+      - "3600"
+    imagePullPolicy: IfNotPresent
+    name: busybox
+  restartPolicy: Always

hack/testdata/recursive/pod-modify/pod/busybox.yaml

@@ -0,0 +1,16 @@
+apiVersion: v1
+kind: Pod
+metadata:
+  name: busybox1
+  labels:
+    app: busybox1
+    status: replaced
+spec:
+  containers:
+  - image: busybox
+    command:
+      - sleep
+      - "3600"
+    imagePullPolicy: IfNotPresent
+    name: busybox
+  restartPolicy: Always

hack/testdata/recursive/pod/busybox.yaml

@@ -0,0 +1,15 @@
+apiVersion: v1
+kind: Pod
+metadata:
+  name: busybox0
+  labels:
+    app: busybox0
+spec:
+  containers:
+  - image: busybox
+    command:
+      - sleep
+      - "3600"
+    imagePullPolicy: IfNotPresent
+    name: busybox
+  restartPolicy: Always

hack/testdata/recursive/pod/pod/busybox-broken.yaml

@@ -0,0 +1,15 @@
+apiVersion: v1
+ind: Pod
+metadata:
+  name: busybox2
+  labels:
+    app: busybox2
+spec:
+  containers:
+  - image: busybox
+    command:
+      - sleep
+      - "3600"
+    imagePullPolicy: IfNotPresent
+    name: busybox
+  restartPolicy: Always

hack/testdata/recursive/pod/pod/busybox.yaml

@@ -0,0 +1,15 @@
+apiVersion: v1
+kind: Pod
+metadata:
+  name: busybox1
+  labels:
+    app: busybox1
+spec:
+  containers:
+  - image: busybox
+    command:
+      - sleep
+      - "3600"
+    imagePullPolicy: IfNotPresent
+    name: busybox
+  restartPolicy: Always

hack/testdata/recursive/rc/busybox.yaml

@@ -0,0 +1,24 @@
+apiVersion: v1
+kind: ReplicationController
+metadata:
+  name: busybox0
+  labels:
+    app: busybox0
+spec:
+  replicas: 1
+  selector:
+    app: busybox0
+  template:
+    metadata:
+      name: busybox0
+      labels:
+        app: busybox0
+    spec:
+      containers:
+      - image: busybox
+        command:
+          - sleep
+          - "3600"
+        imagePullPolicy: IfNotPresent
+        name: busybox
+      restartPolicy: Always

hack/testdata/recursive/rc/rc/busybox-broken.yaml

@@ -0,0 +1,24 @@
+apiVersion: v1
+ind: ReplicationController
+metadata:
+  name: busybox2
+  labels:
+    app: busybox2
+spec:
+  replicas: 1
+  selector:
+    app: busybox2
+  template:
+    metadata:
+      name: busybox2
+      labels:
+        app: busybox2
+    spec:
+      containers:
+      - image: busybox
+        command:
+          - sleep
+          - "3600"
+        imagePullPolicy: IfNotPresent
+        name: busybox
+      restartPolicy: Always

hack/testdata/recursive/rc/rc/busybox.yaml

@@ -0,0 +1,24 @@
+apiVersion: v1
+kind: ReplicationController
+metadata:
+  name: busybox1
+  labels:
+    app: busybox1
+spec:
+  replicas: 1
+  selector:
+    app: busybox1
+  template:
+    metadata:
+      name: busybox1
+      labels:
+        app: busybox1
+    spec:
+      containers:
+      - image: busybox
+        command:
+          - sleep
+          - "3600"
+        imagePullPolicy: IfNotPresent
+        name: busybox
+      restartPolicy: Always