Add advanced 'kubectl edit' test scenarios

Add 'kubectl edit' testcase for saving a repeated error

Add 'kubectl edit' testcase for preserving an edited file with a syntax error

Add 'kubectl edit' testcase for recording command on list of objects

pkg/kubectl/cmd/testdata/edit/testcase-syntax-error/1.edited

@@ -0,0 +1,27 @@
+# Please edit the object below. Lines beginning with a '#' will be ignored,
+# and an empty file will abort the edit. If an error occurs while saving this file will be
+# reopened with the relevant failures.
+#
+apiVersion: v1
+kind: Service
+metadata:
+  creationTimestamp: 2017-02-12T20:11:19Z
+  labels:
+    component: apiserver
+    provider: kubernetes
+  name: kubernetes
+  namespace: default
+  resourceVersion: "8"
+  selfLink: /api/v1/namespaces/default/services/kubernetes
+  uid: 6a8e8829-f15f-11e6-b041-acbc32c1ca87
+spec
+  clusterIP: 10.0.0.1
+  ports:
+    name: https
+    port: 443
+    protocol: TCP
+    targetPort: 443
+  sessionAffinity: ClientIP
+  type: ClusterIP
+status:
+  loadBalancer: {