BridgeDomain capability methods

### VLANBridgeAPIHelper

- buildApiIfaceVlanOptions method, translating NetworkPortVLANSettingData (model) to InterfaceVlanOption (API)

### VLANBridgeCapability

- create and delete vlanBridge methods, queue the action.
- GetInterfacesVlanOptions method, calling the VLANBridgeAPIHelper to translate from resource model to API model.

### NetworkPortVLANSettingData

- When created, nativeVlanID has a default value of -1. The reason is to distinguish between the default value of the int (0) and the vlan 0.

### [ Issues ]

http://jira.i2cat.net/browse/OPENNAAS-1345
http://jira.i2cat.net/browse/OPENNAAS-1346
http://jira.i2cat.net/browse/OPENNAAS-1369