have the release workflow run the smoketest. If it fails, title the PR

with a loud warning and indicate it should not be merged. Otherwise,
create the PR as it normally does.

fixes kiali/kiali#6704

.github/workflows/release.yml

@@ -221,16 +221,32 @@ jobs:
 
           git push origin $(git rev-parse HEAD):refs/heads/$BUILD_TAG
 
-          gh pr create -t "Prepare for next version" -b "Please, merge to update version numbers and prepare for release $NEXT_VERSION." -H $BUILD_TAG -B $RELEASE_BRANCH
+          if hack/smoke-test-release-branch.sh --release-branch $BUILD_TAG; then
+            prtitle="Prepare for next version"
+            prmsg="Please merge to update version numbers and prepare for release $NEXT_VERSION"
+          else
+            prtitle="[DO NOT MERGE YET] Prepare for next version"
+            prmsg="DO NOT MERGE YET! The smoke test failed. Please fix the problem before merging this PR which updates version numbers and prepares for release $NEXT_VERSION"
+          fi
+
+          gh pr create -t "$prtitle" -b "$prmsg" -H $BUILD_TAG -B $RELEASE_BRANCH
           
         # For a patch release, everything is ready to publish the generated charts.
         # Let's push to master
         elif [[ $RELEASE_TYPE == "patch" ]]
         then 
           git push origin $(git rev-parse HEAD):refs/heads/$BUILD_TAG
 
-          gh pr create -t "Prepare for next version" -b "Please, merge to update version numbers and prepare for release $NEXT_VERSION." -H $BUILD_TAG -B master
-         
+          if hack/smoke-test-release-branch.sh --release-branch $BUILD_TAG; then
+            prtitle="Prepare for next version"
+            prmsg="Please merge to update version numbers and prepare for release $NEXT_VERSION"
+          else
+            prtitle="[DO NOT MERGE YET] Prepare for next version"
+            prmsg="DO NOT MERGE YET! The smoke test failed. Please fix the problem before merging this PR which updates version numbers and prepares for release $NEXT_VERSION"
+          fi
+
+          gh pr create -t "$prtitle" -b "$prmsg" -H $BUILD_TAG -B master
+
           # We did a patch release. In this case we need to go back to the version branch and do changes 
           # to the Makefile in that branch to record what's the current path release. Then, commit and push.
           # Also, a vX.Y.Z branch is created
@@ -246,4 +262,4 @@ jobs:
           
           git push origin $(git rev-parse HEAD):refs/tags/$RELEASE_VERSION
 
-        fi
+        fi