Fixed: //FIXME : Should be a remote repository

Substituted local maven repo with github core-maven-repo.

See https://github.com/geonetwork/core-geonetwork/commit/658dbee7d59ba40fbb5dfb5046d46bc4939796e1
Merge remote-tracking branch 'upstream/stable-develop' into develop
Merge branch 'develop' into mongeosource