Modified the changes to support sphinx

Author: dineshbaburam91

docs/_static/.gitkeep

@@ -1,7 +1,6 @@
 from __future__ import absolute_import
 import inspect
 
-from scp import SCPClient
 from jnpr.junos.utils.ssh_client import open_ssh_client
 
 """
@@ -81,6 +80,11 @@ def open(self, **scpargs):
         # @@@ should check for multi-calls to connect to ensure we don't keep
         # @@@ opening new connections
         self._ssh = open_ssh_client(dev=self._junos)
+        # Import SCPClient here to avoid autodoc importing the external
+        # scp module at module-import time which can trigger signature
+        # formatting errors in some environments.
+        from scp import SCPClient
+
         return SCPClient(self._ssh.get_transport(), **scpargs)
 
     def close(self):