Remove gatus group (use host)

playbooks/roles/gatus/defaults/main.yml

@@ -9,7 +9,7 @@ gatus_federation_tester: "https://federationtester.matrix.org/api/report?server_
 gatus_endpoints_other:
   - name: matrix-federation
     url: "{{ gatus_federation_tester }}"
-    group: 9-external
+    group: external
     interval: 5m
     conditions:
       - '[STATUS] == 200'
@@ -23,7 +23,7 @@ gatus_endpoints_other:
         send-on-resolved: true
   - name: healthchecks-io
     url: "{{ opentofu.healthchecksio.status.ping_url }}"
-    group: 9-external
+    group: external
     interval: 5m
     conditions:
       - '[STATUS] == 200'