BUG-1234 nodeType/ID in adaptors

- node change: type MD_SAL -> OF, nodeId String->Long (=dpid)
- nodeConnector change: type MD_SAL -> OF, nodeConnectorId String->Short (=dpid)
- additional changes to statistic table conversions, topology - regarding type+id
- added unit tests

Change-Id: If7e2d6f49e558b9fe95d0a07cf86ed10eb28ff5a
Signed-off-by: Michal Rehak <mirehak@cisco.com>
Merge "BUG-1234 nodeType/ID in adaptors"