Added lifecycle APIs for Cisco Asa 1000v appliance.
Added corresponding Dao and VO classes.
Also added mapping Dao and VO for guest netwok and asa appliance
Changes:
- Added implementation for add/list asa1kv APIs
- Added agent command for associating asa1kv appliance with logical edge firewall in VNMC
- Added handler for the above agent command in VNMC resource class
- Updated VNMC element class to support the above
Added db. tables for asa1kv devices and their mapping with guest network