Add Go benchmark test (#3004)

Run the benchmarks once for each PR.

Fixes #2984

Signed-off-by: Wenqi Qiu <wenqiq@vmware.com>

.github/workflows/go.yml

@@ -183,3 +183,16 @@ jobs:
       run: |
         sudo npm install -g markdownlint-cli
         make markdownlint
+
+  benchmark:
+    name: Go benchmark test
+    runs-on: [ubuntu-latest]
+    steps:
+      - name: Set up Go 1.17
+        uses: actions/setup-go@v2
+        with:
+          go-version: 1.17
+      - name: Check-out code
+        uses: actions/checkout@v2
+      - name: Run Go benchmark test
+        run: go test -run '^$' -bench . -benchtime 1x -timeout 10m -cpu 4 -v -benchmem ./pkg/...