CI: fix pipeline

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

ci-scripts/Jenkinsfile-GitLab-Container

@@ -179,7 +179,7 @@ pipeline {
     stage ("Image Test Processes") {
       parallel {
         stage ("Physical Simulators") {
-          when { expression {doFlexranCtrlTest && doMandatoryTests} }
+          when { expression {doMandatoryTests} }
           steps {
             script {
               triggerSlaveJob ('RAN-PhySim-Cluster', 'Test-Physim-Cluster')