opensearch: Use build-repo.stackable.tech instead of Maven Central

[siegfriedweber]

Description

opensearch: Use build-repo.stackable.tech instead of Maven Central

Note

There are a lot of other repositories defined in Gradle and Java files, e.g. gradlePluginPortal() and lucene-snapshots which are not tackled in this pull request.

Part of stackabletech/opensearch-operator#15

Definition of Done Checklist

• Add an entry to the CHANGELOG.md file
• Integration tests ran successfully

TIP: Running integration tests with a new product image

The image can be built and uploaded to the kind cluster with the following commands:

bake --product <product> --image-version <stackable-image-version>
kind load docker-image <image-tagged-with-the-major-version> --name=<name-of-your-test-cluster>

See the output of bake to retrieve the image tag for <image-tagged-with-the-major-version>.

[lfrancke]

I have not tested the build itself but I'm going to assume that works. The patch itself looks good to me, thank you!

I compared it to what we do in Kafka.