Migrate container to opensearch 1.3.19
Converts over from elasticsearch to opensearch to support the upcoming migration. The repo should similarly be renamed in gitlab to reflect that it is now an opensearch image.
Light changes to the build were required.
- renamed elasticsearch to opensearch everywhere
- the opensearch image is rpm based, was easiest to bring in an additional unpack phase to building that uses debian to unpack the production .deb
- Disables the opensearch security plugin. This matches how opensearch will initially be deployed in prod.
Bug: T372769 Related: I50a8f0ea5085b9f8b0c3627932f198aef0ed00ea