Add support for cliconf and netconf plugin (#25093)

* ansible-connection refactor and action plugin changes
* Add cliconf plugin for eos, ios, iosxr, junos, nxos, vyos
* Add netconf plugin for junos
* Add jsonrpc support
* Modify network_cli and netconf connection plugin
* Fix py3 unit test failure
* Fix review comment
* Minor fixes
* Fix ansible-connection review comments
* Fix CI issue
* platform_agnostic related changes

lib/ansible/plugins/connection/persistent.py

@@ -1,4 +1,4 @@
-# (c) 2016 Red Hat Inc.
+# (c) 2017 Red Hat Inc.
 #
 # This file is part of Ansible
 #
@@ -41,7 +41,6 @@ class Connection(ConnectionBase):
     has_pipelining = False
 
     def _connect(self):
-
         self._connected = True
         return self
 
@@ -83,3 +82,7 @@ class Connection(ConnectionBase):
 
     def close(self):
         self._connected = False
+
+    def run(self):
+        rc, out, err = self._do_it('RUN:')
+        return out