feat(observability): disable grafana on victoria and install via operator

otc/observability.think-ahead.cloud/stacks/observability/victoria-k8s-stack/values.yaml

@@ -50,7 +50,7 @@ defaultDashboards:
   annotations: {}
   grafanaOperator:
     # -- Create dashboards as CRDs (requires grafana-operator to be installed)
-    enabled: false
+    enabled: true
     spec:
       instanceSelector:
         matchLabels:
@@ -826,7 +826,7 @@ vmagent:
 defaultDatasources:
   grafanaOperator:
     # -- Create datasources as CRDs (requires grafana-operator to be installed)
-    enabled: false
+    enabled: true
     annotations: {}
     spec:
       instanceSelector:
@@ -869,7 +869,7 @@ defaultDatasources:
 
 # -- Grafana dependency chart configuration. For possible values refer [here](https://github.com/grafana/helm-charts/tree/main/charts/grafana#configuration)
 grafana:
-  enabled: true
+  enabled: false
   # all values for grafana helm chart can be specified here
   persistence:
     enabled: true
@@ -903,8 +903,6 @@ grafana:
         url: "https://grafana.com/api/dashboards/22759/revisions/6/download"
       ingress-nginx:
         url: "https://raw.githubusercontent.com/adinhodovic/ingress-nginx-mixin/refs/heads/main/dashboards_out/ingress-nginx-overview.json"
-      node-exporter-full:
-        url: "https://raw.githubusercontent.com/rfmoz/grafana-dashboards/refs/heads/master/prometheus/node-exporter-full.json"
       argocd:
         url: "https://raw.githubusercontent.com/argoproj/argo-cd/refs/heads/master/examples/dashboard.json"