TEIID-2670: The connection-type has never been added to the vdb.xml schema or to persistence classes. It was only captured in the VDBMetadata class, thus during the restarts of the server previouly set value was being lost.
Merge pull request #116 from rareddy/TEIID-2670

TEIID-2670: The connection-type has never been added to the vdb.xml sche...