[CI] fix the email generation

Signed-off-by: Raphael Defosseux <raphael.defosseux@eurecom.fr>

ci-scripts/Jenkinsfile-GitLab-Container

@@ -27,6 +27,9 @@ def nodeExecutor = params.nodeExecutor
 def doMandatoryTests = false
 def doFullTestsuite = false
 
+//
+def gitCommitAuthorEmailAddr
+
 pipeline {
   agent {
     label nodeExecutor
@@ -158,15 +161,15 @@ pipeline {
   post {
     always {
       script {
+        def eSubject = JOB_NAME + ' - Build # ' + BUILD_ID + ' - ' + currentBuild.result + '!'
+        def eBody = "Hi,\n\n"
+        eBody += "Here are attached HTML report files for " + JOB_NAME + "  - Build # " + BUILD_ID + " - " + currentBuild.result + "!\n\n"
+        eBody += "Regards,\n"
+        eBody += "OAI CI Team"
         emailext attachmentsPattern: '*results*.html',
-           body: '''Hi,
-
-Here are attached HTML report files for $PROJECT_NAME - Build # $BUILD_NUMBER - $BUILD_STATUS!
-
-Regards,
-OAI CI Team''',
+           body: eBody,
            replyTo: 'no-reply@openairinterface.org',
-           subject: '$PROJECT_NAME - Build # $BUILD_NUMBER - $BUILD_STATUS!',
+           subject: eSubject,
            to: gitCommitAuthorEmailAddr
 
         if (fileExists('.git/CI_COMMIT_MSG')) {