scripts: Add testing of etcd in local image in release workflow.

Signed-off-by: Prasad Chandrasekaran <prasadc@vmware.com>

.github/workflows/release.yaml

@@ -8,7 +8,10 @@ jobs:
     - uses: actions/setup-go@v2
       with:
         go-version: "1.19.7"
-    - run: |
+    - name: release
+      run: |
+        set -euo pipefail
+
         git config --global user.email "github-action@etcd.io"
         git config --global user.name "Github Action"
         gpg --batch --gen-key <<EOF
@@ -22,3 +25,6 @@ jobs:
         Expire-Date: 0
         EOF
         DRY_RUN=true ./scripts/release --no-upload --no-docker-push --in-place 3.5.99
+    - name: test-image
+      run: |
+        VERSION=3.5.99 ./scripts/test_images.sh