Merge branch '1-create-a-pipeline-to-build-and-publish-the-mvn-package-in-gitlab-registry' into 'develop'

added mvn artifact ci automation

See merge request !4

Resolve "Fix to reference new model projects"

See merge request !2

Merge branch '2-refactor-all-org-etsi-osl-model-references-to-org-etsi-osl-model-nfv' into 'develop'

Resolve "refactor all org.etsi.osl.model references to org.etsi.osl.model.nfv"

See merge request !1