authelia: Scale up to 2 replicas

Since Authelia is stateless, we can run a second instance to improve
availability.

authelia/kustomization.yaml

@@ -14,6 +14,10 @@ resources:
 - authelia.yaml
 - oidc-cluster-admin.yaml
 
+replicas:
+- name: authelia
+  count: 2
+
 configMapGenerator:
 - name: authelia
   namespace: authelia