SshRunner.Run: Pass all arguments to BuildCmd

This patch changes SshRunner.Run to pass all arguments to
SshRunner.BuildCmd. They had the same arguments before
and should stay that way. This change makes it easier
to add new or change existing arguments.

Reviewed-by: ultrotter

lib/ssh.py

@@ -133,28 +133,20 @@ class SshRunner:
     argv.extend(["%s@%s" % (user, hostname), command])
     return argv
 
-  def Run(self, hostname, user, command, batch=True, ask_key=False,
-          use_cluster_key=True):
+  def Run(self, *args, **kwargs):
     """Runs a command on a remote node.
 
     This method has the same return value as `utils.RunCmd()`, which it
     uses to launch ssh.
 
     Args:
-      hostname: the target host, string
-      user: user to auth as
-      command: the command
-      batch: if true, ssh will run in batch mode with no prompting
-      ask_key: if true, ssh will run with StrictHostKeyChecking=ask, so that
-               we can connect to an unknown host (not valid in batch mode)
+      See SshRunner.BuildCmd.
 
     Returns:
       `utils.RunResult` like `utils.RunCmd()`
 
     """
-    return utils.RunCmd(self.BuildCmd(hostname, user, command, batch=batch,
-                                      ask_key=ask_key,
-                                      use_cluster_key=use_cluster_key))
+    return utils.RunCmd(self.BuildCmd(*args, **kwargs))
 
   def CopyFileToNode(self, node, filename):
     """Copy a file to another node with scp.