* 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.
* WIP update asa to use network_cli connection plugin
* add asa.py to cliconf plugins
* update asa.py terminal plugin to support regexp and events
* update constants to map asa modules to asa action handler
* update asa action handler to implement persistent connections
* update asa shared module to use persistent connections
* update asa_command module to use new connection
* fixed pep8 issues
Patrick Ogenstad
Ganesh Nalawade
Peter Sprygada