Persistent connection timer changes (#27272)

*  Add command_timeout timer that defines the amount
   of time to wait for a command or RPC call before
   timing out.
*  Remove connect_retries and connect_interval configuration
   varaible and replace it with connect_retry_timeout to control
   the timeout value of connection to local scoket.
*  Make required changes to netowrk action plugins and relevant
   network files in module_utils.
*  Required documentation changes.

lib/ansible/module_utils/junos.py

@@ -50,9 +50,7 @@ junos_argument_spec = {
 }
 
 # Add argument's default value here
-ARGS_DEFAULT_VALUE = {
-    'timeout': 10
-}
+ARGS_DEFAULT_VALUE = {}
 
 
 def get_argspec():