conditional import of shlex_quote

Change-Id: Ic61d680d8442d63bcf0e1c525bd27e2d5d4f1e65
Signed-off-by: Kevin Carter <kevin.carter@rackspace.com>
(cherry picked from commit 7d0a494e95)

connection/ssh.py

@@ -25,6 +25,15 @@ SSH = imp.load_source(
     os.path.join(os.path.dirname(conn.__file__), 'ssh.py')
 )
 
+if not hasattr(SSH, 'shlex_quote'):
+    # NOTE(cloudnull): Later versions of ansible has this attribute already
+    #                  however this is not set in all versions. Because we use
+    #                  this method the attribute will set within the plugin
+    #                  if it's not found.
+    from ansible.compat.six.moves import shlex_quote
+    setattr(SSH, 'shlex_quote', shlex_quote)
+
+
 class Connection(SSH.Connection):
     """Transport options for LXC containers.