[Openstack Controller] Fix duplicate version in keystone url

[dkirov-dd]

What does this PR do?

Motivation

Review checklist (to be filled by reviewers)

• Feature or bugfix MUST have appropriate tests (unit, integration, e2e)
• Add the qa/skip-qa label if the PR doesn't need to be tested during QA.
• If you need to backport this PR to another branch, you can add the backport/<branch-name> label to the PR and it will automatically open a backport PR once this one is merged

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 89.01%. Comparing base (f47ef1f) to head (2acab53).
⚠️ Report is 22 commits behind head on master.

Additional details and impacted files

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.
• 📦 JS Bundle Analysis: Save yourself from yourself by tracking and limiting bundle sizes in JS merges.

[sarah-witt]

Looks good to me, thanks! Do you mind adding a test case for this? We could do something similar as here: https://github.com/DataDog/integrations-core/blob/master/openstack_controller/tests/test_unit_keystone.py#L310-L367 and modify the url returned for keystone in the catalog

[github-actions]

⚠️ The qa/skip-qa label has been added with shippable changes

The following files, which will be shipped with the agent, were modified in this PR and
the qa/skip-qa label has been added.

You can ignore this if you are sure the changes in this PR do not require QA. Otherwise, consider removing the label.

List of modified files that will be shipped with the agent

openstack_controller/changelog.d/21880.fixed
openstack_controller/datadog_checks/openstack_controller/api/catalog.py