Model classes for OSPF API.
Changed in ospf API model.
OSPF capabity method for getting OSPF configuration.
OSPF area stores areaID, not name.
Merge branch 'develop' of https://github.com/dana-i2cat/opennaas into feature/ospf-api
API classes moved to new bundle.
Merge pull request #799 from adrian-rosello/feature/ospf-api

Feature/ospf api

ReadOSPFConfiguration exporting the OSPF configuration trough API. It returns the list of ospfAreas and every ProtocolEndpoint in all of them. Example:

<?xml version="1.0" encoding="UTF-8"?>
<ospfService>
   <ospfArea>
      <areaId>0</areaId>
      <ospfProtocolEndpoint>
         <name>ge-2/0/0.13</name>
         <enabledState>ENABLED</enabledState>
      </ospfProtocolEndpoint>
      <ospfProtocolEndpoint>
         <name>gr-1/1/0.1</name>
         <enabledState>ENABLED</enabledState>
      </ospfProtocolEndpoint>
      <ospfProtocolEndpoint>
         <name>gr-1/1/0.2</name>
         <enabledState>ENABLED</enabledState>
      </ospfProtocolEndpoint>
      <ospfProtocolEndpoint>
         <name>gr-1/1/0.3</name>
         <enabledState>ENABLED</enabledState>
      </ospfProtocolEndpoint>
   </ospfArea>
</ospfService>

Resolves issue [ http://jira.i2cat.net/browse/OPENNAAS-1263 ]