geonetwork connector imported from SVN

pasquale.vitale 7af6595c5e Initial import. ... git-svn-id: http://svn.research-infrastructures.eu/public/d4science/gcube/trunk/data-access/gcube-geonetwork-connector@151465 82a268e6-3cf1-43bd-a215-b396298e98cf		2017-07-31 12:41:07 +00:00