[SMG][CI] Add K8s integration tests + wire into pr-test-rust (#24278)

Co-authored-by: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

sgl-model-gateway/e2e_test/k8s_integration/manifests/gateway-pd.yaml

@@ -0,0 +1,74 @@
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: smg-gateway-pd
+  namespace: smg-test
+spec:
+  replicas: 1
+  selector:
+    matchLabels:
+      app: smg-gateway-pd
+  template:
+    metadata:
+      labels:
+        app: smg-gateway-pd
+    spec:
+      serviceAccountName: smg-gateway
+      containers:
+        - name: gateway
+          image: smg-gateway:test
+          imagePullPolicy: Never
+          args:
+            - "--service-discovery"
+            - "--pd-disaggregation"
+            - "--prefill-selector"
+            - "role=prefill"
+            - "--decode-selector"
+            - "role=decode"
+            - "--service-discovery-port"
+            - "8000"
+            - "--service-discovery-namespace"
+            - "smg-test"
+            - "--port"
+            - "30001"
+            - "--prometheus-port"
+            - "29001"
+            - "--disable-health-check"
+            - "--worker-startup-timeout-secs"
+            - "30"
+            - "--log-level"
+            - "debug"
+          ports:
+            - containerPort: 30001
+              name: http
+            - containerPort: 29001
+              name: metrics
+          readinessProbe:
+            httpGet:
+              path: /liveness
+              port: 30001
+            initialDelaySeconds: 3
+            periodSeconds: 3
+          livenessProbe:
+            httpGet:
+              path: /liveness
+              port: 30001
+            initialDelaySeconds: 5
+            periodSeconds: 10
+---
+apiVersion: v1
+kind: Service
+metadata:
+  name: smg-gateway-pd
+  namespace: smg-test
+spec:
+  type: NodePort
+  selector:
+    app: smg-gateway-pd
+  ports:
+    - name: http
+      port: 30001
+      targetPort: 30001
+    - name: metrics
+      port: 29001
+      targetPort: 29001

sgl-model-gateway/e2e_test/k8s_integration/manifests/gateway.yaml

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+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: smg-gateway
+  namespace: smg-test
+spec:
+  replicas: 1
+  selector:
+    matchLabels:
+      app: smg-gateway
+  template:
+    metadata:
+      labels:
+        app: smg-gateway
+    spec:
+      serviceAccountName: smg-gateway
+      containers:
+        - name: gateway
+          image: smg-gateway:test
+          imagePullPolicy: Never
+          args:
+            - "--service-discovery"
+            - "--selector"
+            - "app=fake-worker"
+            - "--service-discovery-port"
+            - "8000"
+            - "--service-discovery-namespace"
+            - "smg-test"
+            - "--port"
+            - "30000"
+            - "--prometheus-port"
+            - "29000"
+            - "--disable-health-check"
+            - "--worker-startup-timeout-secs"
+            - "30"
+            - "--log-level"
+            - "debug"
+          ports:
+            - containerPort: 30000
+              name: http
+            - containerPort: 29000
+              name: metrics
+          # Use /liveness instead of /readiness for the K8s readiness probe
+          # because /readiness returns 503 when no healthy workers are registered,
+          # and with service discovery the gateway starts with 0 workers.
+          readinessProbe:
+            httpGet:
+              path: /liveness
+              port: 30000
+            initialDelaySeconds: 3
+            periodSeconds: 3
+          livenessProbe:
+            httpGet:
+              path: /liveness
+              port: 30000
+            initialDelaySeconds: 5
+            periodSeconds: 10
+---
+apiVersion: v1
+kind: Service
+metadata:
+  name: smg-gateway
+  namespace: smg-test
+spec:
+  type: NodePort
+  selector:
+    app: smg-gateway
+  ports:
+    - name: http
+      port: 30000
+      targetPort: 30000
+    - name: metrics
+      port: 29000
+      targetPort: 29000

sgl-model-gateway/e2e_test/k8s_integration/manifests/namespace.yaml

@@ -0,0 +1,4 @@
+apiVersion: v1
+kind: Namespace
+metadata:
+  name: smg-test

sgl-model-gateway/e2e_test/k8s_integration/manifests/rbac.yaml

@@ -0,0 +1,29 @@
+apiVersion: v1
+kind: ServiceAccount
+metadata:
+  name: smg-gateway
+  namespace: smg-test
+---
+apiVersion: rbac.authorization.k8s.io/v1
+kind: Role
+metadata:
+  name: smg-gateway
+  namespace: smg-test
+rules:
+  - apiGroups: [""]
+    resources: ["pods"]
+    verbs: ["get", "list", "watch"]
+---
+apiVersion: rbac.authorization.k8s.io/v1
+kind: RoleBinding
+metadata:
+  name: smg-gateway
+  namespace: smg-test
+roleRef:
+  apiGroup: rbac.authorization.k8s.io
+  kind: Role
+  name: smg-gateway
+subjects:
+  - kind: ServiceAccount
+    name: smg-gateway
+    namespace: smg-test