[Rspamd] Force-add metadata_exporter

data/conf/rspamd/local.d/metadata_exporter.conf

@@ -0,0 +1,10 @@
+rules {
+        QUARANTAINE {
+                backend = "http";
+                url = "http://nginx:9081/pipe.php";
+                selector = "is_reject";
+                formatter = "default";
+                meta_headers = true;
+        }
+}
+