[BUG] Rename to OpenSearch has the distribution gradle task failing.

[adnapibar]

Describe the bug

As part of the renaming to OpenSearch work we find the opensearch_distributions gradle task is failing. Currently this is commented out in the build files - #397

To Reproduce
Uncomment the section for task opensearch_distributions in OpenSearch/qa/remote-clusters/build.gradle
Run ./gradlew clean

The following error occurs

* What went wrong:
A problem occurred evaluating project ':qa:remote-clusters'.
> No signature of method: build_1wugafz770f8fs2etkwqlbhbl.opensearch_distributions() is applicable for argument types: (build_1wugafz770f8fs2etkwqlbhbl$_run_closure2) values: [build_1wugafz770f8fs2etkwqlbhbl$_run_closure2@19fa5feb]

Expected behavior

Gradle task should run successfully without any error.