CI: Test scm checkout from Jenkinsfile

Signed-off-by: Jaroslava Fiedlerova <jaroslava.fiedlerova@openairinterface.org>

ci-scripts/Jenkinsfile

@@ -41,11 +41,16 @@ pipeline {
     timestamps()
     ansiColor('xterm')
     lock(extra: lockResources)
+    skipDefaultCheckout()
   }
 
   stages {
     stage("Build Init") {
       steps {
+        checkout(
+          scmGit(branches: [[name: "${branch}"]],
+                 userRemoteConfigs: [[url: "${repository}"]])
+        )
         script {
           echo '\u2705 \u001B[94mBuild Init\u001B[0m'
           JOB_TIMESTAMP = sh(returnStdout: true, script: 'date --utc --rfc-3339=seconds | sed -e "s#+00:00##"').trim()

ci-scripts/Jenkinsfile-GitLab-Container

@@ -892,7 +892,8 @@ def triggerSlaveJob (jobName, gitlabStatusName) {
       booleanParam(name: 'eNB_mergeRequest', value: "MERGE".equals(env.gitlabActionType)),
       booleanParam(name: 'mergeWithTarget', value: "MERGE".equals(env.gitlabActionType)),
       string(name: 'eNB_TargetBranch', value: String.valueOf(env.gitlabTargetBranch)),
-      string(name: 'targetBranch', value: String.valueOf(env.gitlabTargetBranch))
+      string(name: 'targetBranch', value: String.valueOf(env.gitlabTargetBranch)),
+      string(name: 'testBranch', value: "${env.gitlabSourceBranch.replace('/', '-')}-${env.gitlabMergeRequestLastCommit}")
     ], propagate: false
   def localResult = localStatus.getResult()
   echo "${jobName} Slave Job status is ${localResult}"
@@ -907,13 +908,9 @@ def triggerSlaveJob (jobName, gitlabStatusName) {
 
 def triggerCN5GSlaveJob (jobName, gitlabStatusName) {
   if ("MERGE".equals(env.gitlabActionType)) {
-    shaOne = sh returnStdout: true, script: 'git log -1 --pretty=format:"%H" ' + env.gitlabMergeRequestLastCommit
-    shaOne = shaOne.trim()
-    fullRanTag = OAI_Registry + '/oai-gnb:' + env.gitlabSourceBranch + '-' + shaOne
+    fullRanTag = OAI_Registry + '/oai-gnb:' + "${env.gitlabSourceBranch.replace('/', '-')}-${env.gitlabMergeRequestLastCommit}"
   } else {
-    shaOne = sh returnStdout: true, script: 'git log -1 --pretty=format:"%H" ' + env.GIT_COMMIT
-    shaOne = shaOne.trim()
-    fullRanTag = OAI_Registry + '/oai-gnb:develop-' + shaOne
+    fullRanTag = OAI_Registry + '/oai-gnb:develop-' + env.GIT_COMMIT
   }
   // Workaround for the "cancelled" GitLab pipeline notification
   // The slave job is triggered with the propagate false so the following commands are executed