Echo debug env variables.

Signed-off-by: Boris Djalal <boris.djalal@eurecom.fr>

ci-scripts/test-boris-Jenkinsfile

@@ -349,7 +349,11 @@ pipeline {
                 //sh "./ci-scripts/oai-ci-vm-tool destroy --job-name ${JOB_NAME} --build-id ${BUILD_ID}"
 		echo "PROJECT_NAME = ${PROJECT_NAME}"		
 		echo "BUILD_NUMBER = ${BUILD_NUMBER}"		
-		echo "BUILD_STAGE_STATUS = ${BUILD_STAGE_STATUS}"		
+		echo "BUILD_STAGE_STATUS = ${BUILD_STAGE_STATUS}"
+		echo "GIT_URL = ${GIT_URL}"
+		echo "env.gitlabSourceBranch = ${env.gitlabSourceBranch}"
+		echo "env.gitlabMergeRequestLastCommit = ${env.gitlabMergeRequestLastCommit}"
+		echo "env.gitlabTargetBranch = ${env.gitlabTargetBranch}"		
                 emailext attachmentsPattern: '*results*.html',
                      body: '''Hi,
 Here are attached HTML report files for $PROJECT_NAME - Build # $BUILD_NUMBER - $BUILD_STAGE_STATUS