* Create asyncos.yaml
Added device definition for AsyncOS devices.
* Create asyncos.inc.php
Add poller definition for Async devices.
* Update asyncos.yaml
Added discovery modules.
* Update asyncos.inc.php
Refactored version, hardware, and serial parsers.
* Add AsyncOS MIBs
Add MIBs for AsyncOS WSA and ESA appliances.
* Added OS test
* AsyncOS Refactoring/OS Support
* Change serial number in unit OS test