Add RBAC configuration for dashboard admin and update TLS secret reference

infrastructure_setup/kubernetes-dashboard/dashboard-admin-rbac.yaml

@@ -0,0 +1,32 @@
+---
+# Service Account and RBAC for Dashboard admin access
+apiVersion: v1
+kind: ServiceAccount
+metadata:
+  name: dashboard-admin
+  namespace: kubernetes-dashboard
+
+---
+apiVersion: rbac.authorization.k8s.io/v1
+kind: ClusterRoleBinding
+metadata:
+  name: dashboard-admin
+subjects:
+  - kind: ServiceAccount
+    name: dashboard-admin
+    namespace: kubernetes-dashboard
+roleRef:
+  kind: ClusterRole
+  name: cluster-admin
+  apiGroup: rbac.authorization.k8s.io
+
+---
+# Token for dashboard-admin
+apiVersion: v1
+kind: Secret
+metadata:
+  name: dashboard-admin-token
+  namespace: kubernetes-dashboard
+  annotations:
+    kubernetes.io/service-account.name: dashboard-admin
+type: kubernetes.io/service-account-token