feat(multiplayer): protect allocator availability

deploy/k8s/base/allocator-pdb.yaml

@@ -0,0 +1,10 @@
+apiVersion: policy/v1
+kind: PodDisruptionBudget
+metadata:
+  name: allocator
+  namespace: cosmic-clash
+spec:
+  minAvailable: 1
+  selector:
+    matchLabels:
+      app.kubernetes.io/name: allocator

deploy/k8s/base/kustomization.yaml

@@ -9,6 +9,7 @@ resources:
   - control-plane-service.yaml
   - allocator-deployment.yaml
   - allocator-service.yaml
+  - allocator-pdb.yaml
   - fleet.yaml
   - fleet-autoscaler.yaml
   - game-server-pdb.yaml