Reference shared infra RBAC in deployment scripts

PRI-750: update plugin repos to reference shared infra RBAC (PRI-695 follow-up)

- deployment/e2e-ci-runner-rbac.yaml: replaced duplicate manifest with
  reference comment pointing to privilegedescalation/infra/base/rbac/e2e-ci-runner-headlamp-rbac.yaml
- scripts/deploy-e2e-headlamp.sh: updated RBAC preflight comment and error
  message to reference infra path
- scripts/teardown-e2e-headlamp.sh: added RBAC reference comment

Infra RBAC is the source of truth managed by Flux GitOps. CI workflow
unchanged (Hugh owns .github/workflows/).

scripts/deploy-e2e-headlamp.sh

@@ -11,7 +11,9 @@
 # Prerequisites:
 #   - Plugin built (dist/ exists with plugin-main.js + package.json)
 #   - kubectl configured with cluster access
-#   - RBAC applied: kubectl apply -f deployment/e2e-ci-runner-rbac.yaml
+# RBAC is managed via Flux from privilegedescalation/infra/base/rbac/e2e-ci-runner-headlamp-rbac.yaml.
+# The infra repo is the source of truth — do not apply this file directly.
+# Apply RBAC first: kubectl apply -f privilegedescalation/infra/base/rbac/e2e-ci-runner-headlamp-rbac.yaml
 #
 # Environment:
 #   E2E_NAMESPACE     — namespace for E2E Headlamp (default: headlamp-plugins-e2e)
@@ -35,7 +37,7 @@ fi
 echo "Checking RBAC permissions in namespace '${E2E_NAMESPACE}'..."
 if ! kubectl auth can-i delete configmaps -n "$E2E_NAMESPACE" --quiet 2>/dev/null; then
   echo "ERROR: Missing RBAC — cannot delete configmaps in namespace '${E2E_NAMESPACE}'." >&2
-  echo "  Apply RBAC first: kubectl apply -f deployment/e2e-ci-runner-rbac.yaml" >&2
+  echo "  Apply RBAC first: kubectl apply -f privilegedescalation/infra/base/rbac/e2e-ci-runner-headlamp-rbac.yaml" >&2
   exit 1
 fi
 

scripts/teardown-e2e-headlamp.sh

@@ -3,6 +3,9 @@
 #
 # Tears down the dedicated E2E Headlamp instance deployed by deploy-e2e-headlamp.sh.
 #
+# RBAC is managed via Flux from privilegedescalation/infra/base/rbac/e2e-ci-runner-headlamp-rbac.yaml.
+# The infra repo is the source of truth — do not apply this file directly.
+#
 # Environment:
 #   E2E_NAMESPACE  — namespace to clean up (default: headlamp-plugins-e2e)
 #   E2E_RELEASE    — release/resource name prefix (default: headlamp-e2e)