Run arm64 robustness tests in a container.

Signed-off-by: James Blair <mail@jamesblair.net>

.github/workflows/robustness-nightly.yaml

@@ -15,7 +15,7 @@ jobs:
       testTimeout: 200m
       artifactName: main
   main-arm64:
-    uses: ./.github/workflows/robustness-template.yaml
+    uses: ./.github/workflows/robustness-template-arm64.yaml
     with:
       etcdBranch: main
       count: 100

.github/workflows/robustness-template-arm64.yaml

@@ -0,0 +1,72 @@
+name: Reusable Robustness Workflow
+on:
+  workflow_call:
+    inputs:
+      etcdBranch:
+        required: true
+        type: string
+      count:
+        required: true
+        type: number
+      testTimeout:
+        required: false
+        type: string
+        default: '30m'
+      artifactName:
+        required: true
+        type: string
+      runs-on:
+        required: false
+        type: string
+        default: "['ubuntu-latest']"
+permissions: read-all
+
+jobs:
+  goversion:
+    uses: ./.github/workflows/go-version.yaml
+  test:
+    timeout-minutes: 210
+    runs-on: ${{ fromJson(inputs.runs-on) }}
+    needs: goversion
+    container: golang:1.19-bullseye
+    defaults:
+      run:
+        shell: bash
+    steps:
+      - uses: actions/checkout@8e5e7e5ab8b370d6c329ec480221332ada57f0ab # v3.5.2
+      # https://github.com/actions/checkout/issues/1169
+      - run: git config --system --add safe.directory '*' 
+      - uses: actions/setup-go@fac708d6674e30b6ba41289acaab6d4b75aa0753 # v4.0.1
+        with:
+          go-version: ${{ needs.goversion.outputs.goversion }}
+      - name: test-robustness
+        env:
+          ETCD_BRANCH: "${{ inputs.etcdBranch }}"
+        run: |
+          set -euo pipefail
+
+          # Use --failfast to avoid overriding report generated by failed test
+          GO_TEST_FLAGS="-v --count ${{ inputs.count }} --timeout ${{ inputs.testTimeout }} --failfast --run TestRobustness"
+          case "${ETCD_BRANCH}" in
+            release-3.5)
+              EXPECT_DEBUG=true GO_TEST_FLAGS=${GO_TEST_FLAGS} RESULTS_DIR=/tmp/results make test-robustness-release-3.5
+              ;;
+            release-3.4)
+              EXPECT_DEBUG=true GO_TEST_FLAGS=${GO_TEST_FLAGS} RESULTS_DIR=/tmp/results make test-robustness-release-3.4
+              ;;
+            main)
+              make gofail-enable
+              make build
+              EXPECT_DEBUG=true GO_TEST_FLAGS=${GO_TEST_FLAGS} RESULTS_DIR=/tmp/results make test-robustness
+              ;;
+            *)
+              echo "Failed to find target ${ETCD_BRANCH}"
+              exit 1
+              ;;
+          esac
+      - uses: actions/upload-artifact@0b7f8abb1508181956e8e162db84b466c27e18ce
+        if: always()
+        with:
+          name: ${{ inputs.artifactName }}
+          path: /tmp/results/*
+