Fix. Execute the changelog shell script without login

Change-Id: I893da0c613a78f0e22b8fa65f02285f6274c4b69
Signed-off-by: garciadeblas <gerardo.garciadeblas@telefonica.com>
diff --git a/Jenkinsfile.new b/Jenkinsfile.new
index 86735f3..29406fa 100644
--- a/Jenkinsfile.new
+++ b/Jenkinsfile.new
@@ -123,7 +123,7 @@
             sh """
               docker run --rm ${common} \
                 ${env.TEST_IMAGE} \
-                /bin/sh -lc 'devops/tools/generatechangelog-pipeline.sh > /tests/changelog/changelog-${MDG}.html'
+                sh -c 'devops/tools/generatechangelog-pipeline.sh > /tests/changelog/changelog-${MDG}.html'
             """
           }
         }