Fixed Unit tests for TMF API

See merge request !8

Merge branch '12-create-a-pipeline-to-build-and-publish-the-docker-image-in-gitlab-registry' into 'develop'

Resolve "Create a pipeline to build and publish the docker image in gitlab registry"

See merge request !7

Merge branch 'develop' into '12-create-a-pipeline-to-build-and-publish-the-docker-image-in-gitlab-registry'

# Conflicts:
#   .gitlab-ci.yml

Merge branch '2-create-a-pipeline-to-build-and-publish-the-mvn-package-in-gitlab-registry' into 'develop'

added mvn artifact ci automation

See merge request !5