fix client_secret substitution for monitoring

flux2/apps/monitoring/kube-prometheus-stack-values-configmap.yaml

@@ -155,7 +155,7 @@ data:
           name: Stackspin
           enabled: true
           client_id: grafana
-          client_secret: "${grafana_oauth_client_secret}"
+          client_secret: "${client_secret}"
           scopes: "openid profile email stackspin_roles"
           auth_url: "https://sso.${domain}/oauth2/auth"
           token_url: "https://sso.${domain}/oauth2/token"

flux2/cluster/optional/monitoring/monitoring.yaml

@@ -61,6 +61,8 @@ spec:
     substituteFrom:
       - kind: Secret
         name: stackspin-kube-prometheus-stack-variables
+      - kind: Secret
+        name: stackspin-kube-prometheus-stack-oauth-variables
       - kind: Secret
         name: stackspin-oauth-variables
       - kind: Secret