Fix. Remove build number from image tags on merge

Change-Id: I8b817a198a34354729de3609daeacb66263f8384
Signed-off-by: caviedesj <juancamilo.caviedesvalencia.ext@telefonica.com>
diff --git a/Jenkinsfile.new b/Jenkinsfile.new
index 836dc1f..d238883 100644
--- a/Jenkinsfile.new
+++ b/Jenkinsfile.new
@@ -180,7 +180,7 @@
           // Remove promotion logic from this stage
           def moduleTags = []
           if (isMergeJob) {
-            moduleTags << "${baseTagPrefix}-merge-${buildNumber}"
+            moduleTags << "${baseTagPrefix}-merge"
           } else {
             moduleTags << "${baseTagPrefix}-patchset-${buildNumber}"
           }