Add branch prefix [RHELDST-36928]

[necipkavrukoglu]

Currently it's easy to break UBI tooling when branch is created with non-standard naming.
In order to avoid this, branch_prefix configuration is added as optional parameter.
it is configured in CDN Definitions.
If prefixes do not match, pre load function skips these branches, load function fails.

[Gdetrane]

I haven't had a chance to review the 3 PRs in detail with full context, but I'm just jumping in to point out this error raising might be problematic (before I forget), given the previous filtering done in _pre_load. We wanted to avoid crashing the ubi sync jobs and warn + skip in the first place (see https://issues.redhat.com/browse/RHELDST-29955 and https://issues.redhat.com/browse/RHELDST-29966, and related PR: https://github.com/release-engineering/ubi-config/pull/82/changes).

Just bringing this to @rbikar's attention, we have chatted a bit about it, but I want to make sure I'm not missing the bigger picture here

[rbikar]

@Gdetrane

thanks for pointing that out.

@necipkavrukoglu
In real code we use typically load_all() - where the required filtering is already done. So this will become a dead code.

And also if one calls only load(), it should also filtered correctly because of pre_load() called during instantiation, so most likely this exception will never be raised.

Maybe you can simulate it in unit test, if there's such edge case.

[necipkavrukoglu]

I agree with both of you @rbikar , @Gdetrane. I implemented since I saw regex match for branch in upper lines.
Removed it.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 100.00%. Comparing base (0e20210) to head (454927c).
⚠️ Report is 4 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff            @@
##            master      #139   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files           13        13           
  Lines          365       371    +6     
=========================================
+ Hits           365       371    +6     

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[Gdetrane]

Same thing applies here, just like in release-engineering/ubi-manifest#322, always make sure to run all test environments in tox

[rbikar]

@necipkavrukoglu

pylint seems to complain on some added code, can you have a look? https://github.com/release-engineering/ubi-config/actions/runs/22175017818/job/64165115081?pr=139

[necipkavrukoglu]

@rbikar,

pylint seems to complain on some added code, can you have a look? https://github.com/release-engineering/ubi-config/actions/runs/22175017818/job/64165115081?pr=139

Right, missed one line linting, fixed

@Gdetrane

Same thing applies here, just like in release-engineering/ubi-manifest#322, always make sure to run all test environments in tox

There is another merge request for ubi-config which needs to be merged first in order to not have failures related with it.