Fix/arm preperations

[Maleware]

Description

This PR fixes some problems with the arm build of our products.

Notable mentions:

• Stackable-Base image has an updated sha to the manifest list of ubi8-minimal
• STATSD_EXPORTER is now a binary in nexus rahter then being pulled from their image
• OPA binary now available in nexus with both architectures
• ubi8-rust-builder has now a dependency to the corresponding manifest list
• Testing_Tools has now a dependency to the corresponding manifest list

Definition of Done Checklist

• Not all of these items are applicable to all PRs, the author should update this template to only leave the boxes in that are relevant
• Please make sure all these things are done and tick the boxes

- [ ] Changes are OpenShift compatible
- [ ] All added packages (via microdnf or otherwise) have a comment on why they are added
- [ ] Things not downloaded from Red Hat repositories should be mirrored in the Stackable repository and downloaded from there
- [ ] All packages should have (if available) signatures/hashes verified
- [ ] Does your change affect an SBOM? Make sure to update all SBOMs

[sbernauer]

I have to admit this is a bit confusing to me. What do you think of removing it again?

Also we should add entries for this PR

[sbernauer]

Same as with greenlet here

[sbernauer]

I'm no Python guy but I assume we need to be careful here making a breaking change with a Airflow dependency.
https://github.com/python-greenlet/greenlet/blob/master/CHANGES.rst#300a1-2023-06-21 sounds like Python 2.12 addition and 2.7, 3.5 and 3.6 removal as well as C++ bump.

WDYT of pulling in 3.0.2 only for the experimental ARM builds to not disturb the "production" x86 image?

Maybe we could also back-port the fixes (whatever they are) to greenlet 2.0.2

Options:

1. Merge as-is
2. Pull in 3.0.2 only for the experimental ARM builds to not disturb the "production" x86 image
3. Back-port the fixes (whatever they are) to greenlet 2.0.2
4. Try to bump greenlet upstream in Airflow. This does not work for gevent however, as this PR downgrades it. This is more of a long-term solution, as we have a dependency on upstream releases.

Arch meeting 2024-01-03 outcome:

1. No
2. Maybe, but only as long as arm support is experimental
3. No
4. Yeah, at least raise an issue in Airflow

[maltesander]

Why downgrade?

[Maleware]

Because... although they claim it gevent 23.9.1 is not building together with greenlet 3.0.2 on arm64.

[lfrancke]

Fwiw I'm with Sebastian and Malte. We need to be careful with changing dependency versions

[maltesander]

Not a fan of push and pop d. Can we just use "curl -o .." or workdir or at least use wrapping (" && \") for better readability?

[Maleware]

outdated, closing it.