Fix Grafana external endpoint blackbox config

Author: MoteHue

etc/kayobe/kolla/inventory/group_vars/prometheus-blackbox-exporter

@@ -111,6 +111,8 @@ prometheus_blackbox_exporter_endpoints_default:
     enabled: "{{ enable_etcd | bool }}"
   - endpoints:
       - "grafana:http_2xx:{{ grafana_public_endpoint }}"
+    enabled: "{{ enable_grafana_external | bool }}"
+  - endpoints:
       - "{{ ('grafana_internal:http_2xx:' + grafana_internal_endpoint) if not kolla_same_external_internal_vip | bool }}"
     enabled: "{{ enable_grafana | bool }}"
   - endpoints:

releasenotes/notes/fix-blackbox-exporter-config-with-no-external-grafana-de1db02c540af6d8.yaml

@@ -0,0 +1,6 @@
+---
+fixes:
+  - |
+    Fixes an issue where the external Grafana endpoint would be added to
+    Prometheus Blackbox Exporter config, even when ``enable_grafana_external``
+    was disabled.