[CI] Optimize nightly CI (#3858)

### What this PR does / why we need it?
This patch optimize nightly CI:
1. Bug fixes ais_bench get None repo_type error
2. Fix A2 install kubectl error with arm arch
3. Fix the multi_node CI unable to determine whether the job was
successful error
### Does this PR introduce _any_ user-facing change?

### How was this patch tested?


- vLLM version: v0.11.0rc3
- vLLM main:
83f478bb19

---------

Signed-off-by: wangli <wangli858794774@gmail.com>

.github/workflows/_kill_lws_resources.yaml

@@ -0,0 +1,57 @@
+name: 'resource clear'
+
+on:
+  workflow_call:
+    inputs:
+      runner:
+        required: false
+        type: string
+        default: linux-aarch64-a3-0
+    secrets:
+      KUBECONFIG_B64:
+        required: true
+
+
+# Bash shells do not use ~/.profile or ~/.bashrc so these shells need to be explicitly
+# declared as "shell: bash -el {0}" on steps that need to be properly activated.
+# It's used to activate ascend-toolkit environment variables.
+defaults:
+  run:
+    shell: bash -el {0}
+
+jobs:
+  resource_clear:
+    # This is a runner with no NPU for k8s controller
+    runs-on: ${{ inputs.runner }}
+    container:
+      image: m.daocloud.io/quay.io/ascend/cann:8.2.rc1-a3-ubuntu22.04-py3.11
+      env:
+        KUBECONFIG: /tmp/kubeconfig
+        KUBECTL: /root/.cache/.kube/kubectl
+        NAMESPACE: vllm-project
+        LEADER_POD: vllm-0
+        RESULT_FILE: /root/.cache/tests/ret/test_result.txt
+    steps:
+        - name: Install kubectl
+          run: |
+            # Install kubectl
+            arch=$(uname -m)
+
+            if echo "$arch" | grep -qiE "arm|aarch64"; then
+              echo "Detected ARM architecture: $arch"
+              KUBECTL="$KUBECTL"_arm
+            fi
+            install -o root -g root -m 0755 $KUBECTL /usr/local/bin/kubectl
+
+            # Verify kubectl installation
+            kubectl version --client=true
+
+        - name: Decode kubeconfig from secrets
+          run: |
+            # Decode and save kubeconfig
+            echo "${{ secrets.KUBECONFIG_B64 }}" | base64 -d > $KUBECONFIG
+
+        - name: Clear LWS resources
+          if: always()
+          run: |
+            kubectl delete leaderworkerset vllm -n "$NAMESPACE" --ignore-not-found