New maven options to parallelize the builds.

Jenkinsfile

@@ -69,6 +69,7 @@ pipeline {
     // see https://jenkins.io/doc/book/pipeline/syntax/#environment
     environment {
         JOB_OPTIONS = "${options}"
+        MAVEN_OPTS="-Dmaven.artifact.threads=16 -T 2C"
         AGENT_ROOT_FOLDER = "${agent_root_folder}"
         MAVEN_SETTINGS_FILE = "${maven_settings_file}"
         MAVEN_LOCAL_REPO = "${agent_root_folder}/${maven_local_repo_path}"