Issue #3395631 by hdnag, borisson_, marvil07, dagmar, Wim Leers: Add...

Issue #3395631 by hdnag, borisson_, marvil07, dagmar, Wim Leers: Add validation constraints to dblog.settings

core/modules/dblog/config/schema/dblog.schema.yml

@@ -7,3 +7,8 @@ dblog.settings:
     row_limit:
       type: integer
       label: 'Database log messages to keep'
+      constraints:
+        Range:
+          min: 0
+  constraints:
+    FullyValidatable: ~