Merge pull request #13383 from hurf/label_drun

Add --dry-run option for label command

docs/user-guide/kubectl/kubectl_label.md

@@ -75,6 +75,7 @@ $ kubectl label pods foo bar-
 
 ```
       --all[=false]: select all resources in the namespace of the specified resource types
+      --dry-run[=false]: If true, only print the object that would be sent, without sending it.
   -f, --filename=[]: Filename, directory, or URL to a file identifying the resource to update the labels
   -h, --help[=false]: help for label
       --no-headers[=false]: When using the default output, don't print headers.
@@ -120,7 +121,7 @@ $ kubectl label pods foo bar-
 
 * [kubectl](kubectl.md)	 - kubectl controls the Kubernetes cluster manager
 
-###### Auto generated by spf13/cobra at 2015-08-26 09:03:39.977006328 +0000 UTC
+###### Auto generated by spf13/cobra at 2015-08-31 12:51:55.222410248 +0000 UTC
 
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