ironbank: rename ubi9 to ubi image

[v1v]

elastic/beats#37153 will need to be merged when this one is merged to help with the changes in the DRA (elastic/infra)

What does this PR do?

Rename docker images from ubi9 to ubi from 8.12 onwards

Why is it important?

Help in the future with non-versioned docker image names. So there won't be any need to change anything in the unified Release.

Checklist

• My code follows the style guidelines of this project
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• I have made corresponding change to the default configuration files
• I have added tests that prove my fix is effective or that my feature works
• I have added an entry in ./changelog/fragments using the changelog tool
• I have added an integration test or an E2E test

Author's Checklist

• [ ]

How to test this PR locally

Related issues

• Requires ironbank: use ubi:9.3 #3787

Use cases

Screenshots

Logs

Questions to ask yourself

• How are we going to support this in production?
• How are we going to measure its adoption?
• How are we going to debug this?
• What are the metrics I should take care of?
• ...

[mergify]

This pull request is now in conflicts. Could you fix it? 🙏
To fixup this pull request, you can check out it locally. See documentation: https://help.github.com/articles/checking-out-pull-requests-locally/

git fetch upstream
git checkout -b feature/replace-ubi9-and-use-ubi upstream/feature/replace-ubi9-and-use-ubi
git merge upstream/main
git push upstream feature/replace-ubi9-and-use-ubi

[mergify]

This pull request does not have a backport label. Could you fix it @v1v? 🙏
To fixup this pull request, you need to add the backport labels for the needed
branches, such as:

• backport-v./d./d./d is the label to automatically backport to the 8./d branch. /d is the digit

NOTE: backport-skip has been added to this pull request.

[v1v]

elastic/beats#37153 should be merged at the same time

[mergify]

This pull request is now in conflicts. Could you fix it? 🙏
To fixup this pull request, you can check out it locally. See documentation: https://help.github.com/articles/checking-out-pull-requests-locally/

git fetch upstream
git checkout -b feature/replace-ubi9-and-use-ubi upstream/feature/replace-ubi9-and-use-ubi
git merge upstream/main
git push upstream feature/replace-ubi9-and-use-ubi

[elastic-sonarqube]

SonarQube Quality Gate

0 Bugs
0 Vulnerabilities
0 Security Hotspots
0 Code Smells

No Coverage information
No Duplication information

[pierrehilbert]

Integration test failed for unrelated reason.
I'm forcing the merge.