Api remove owned groups

What does this MR do?

Removes the /groups/owned endpoint and replaces it with a query to /groups?owned=true

Does this MR meet the acceptance criteria?

• Changelog entry added
• Documentation created/updated
• API support added
• Tests
  • Added for this feature/bug
  • All builds are passing
• Conform by the merge request performance guides
• Conform by the style guides
• Branch has no merge conflicts with master (if it does - rebase it please)
• Squashed related commits together

What are the relevant issue numbers?

Closes #27937 (closed)

changed milestone to %9.0

added Deliverable ~874211 ~480950 ~13884 ~728081 labels

assigned to @smcgivern

added 1 commit

• 1c363464 - Update documentation

Compare with previous version

added ~164274 label

added 3 commits

• 16150036 - API: Use parameter to get owned groups instead of dedicated endpoint
• 2ac84e36 - Backport groups API to V3
• a82e3d30 - Update documentation

Compare with previous version

added 3 commits

• 16150036 - API: Use parameter to get owned groups instead of dedicated endpoint
• 2ac84e36 - Backport groups API to V3
• a82e3d30 - Update documentation

Compare with previous version

Thanks @razer6!

enabled an automatic merge when the pipeline for 806c7488 succeeds

@smcgivern Could you do a manual merge before another API MR conflicts this one

canceled the automatic merge

mentioned in commit 2a67e02b

merged

added devopsplan label