Refactor Helm action

.github/workflows/e2e.yaml

@@ -20,7 +20,7 @@ jobs:
           restore-keys: |
             ${{ runner.os }}-go-
       - name: Setup Go
-        uses: actions/setup-go@v2-beta
+        uses: actions/setup-go@v2
         with:
           go-version: 1.14.x
       - name: Setup Helm
@@ -45,8 +45,7 @@ jobs:
           helm upgrade -i podinfo ./charts/podinfo \
           --set image.repository=test/podinfo \
           --set image.tag=latest \
-          --namespace=default \
-          --wait
+          --namespace=default
       - name: Integration test
         run: |
           kubectl rollout status deployment/podinfo --timeout=1m