ci: request stable storage for rust gate

Jenkinsfile

@@ -11,17 +11,35 @@ spec:
     hardware: rpi5
     kubernetes.io/arch: arm64
     node-role.kubernetes.io/worker: "true"
+  affinity:
+    nodeAffinity:
+      requiredDuringSchedulingIgnoredDuringExecution:
+        nodeSelectorTerms:
+          - matchExpressions:
+              - key: kubernetes.io/hostname
+                operator: NotIn
+                values:
+                  - titan-11
   containers:
     - name: rust-ci
       image: rust:1.92-bookworm
       command: ["cat"]
       tty: true
+      resources:
+        requests:
+          cpu: "1000m"
+          memory: "3Gi"
+          ephemeral-storage: "6Gi"
+        limits:
+          memory: "6Gi"
+          ephemeral-storage: "12Gi"
       volumeMounts:
         - name: workspace-volume
           mountPath: /home/jenkins/agent
   volumes:
     - name: workspace-volume
-      emptyDir: {}
+      emptyDir:
+        sizeLimit: 12Gi
 """
     }
   }