Start failing logs with errors except neutron

Change-Id: Ie9d52cca37fc02cdec506633b055e37c7e35fabe
diff --git a/tools/check_logs.py b/tools/check_logs.py
index ded51b4..6d4436e 100755
--- a/tools/check_logs.py
+++ b/tools/check_logs.py
@@ -125,8 +125,8 @@
         if is_neutron:
             print("Currently not failing neutron builds with errors")
             return 0
-        # Return non-zero to start failing builds
-        return 0
+        print("FAILED")
+        return 1
     else:
         print("ok")
         return 0