Remove user_id from API schema

[uranusjr]

Fix #15059. The role schema doesn't seem to contain an ID at all (only the role name), so I just removed the user ID.

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[github-actions]

The PR is likely OK to be merged with just subset of tests for default Python and Database versions without running the full matrix of tests, because it does not modify the core of Airflow. If the committers decide that the full tests matrix is needed, they will add the label 'full tests needed'. Then you should rebase to the latest master or amend the last commit of the PR, and push it with --force-with-lease.

[kaxil]

Can you take a look at the failing tests please @uranusjr

[uranusjr]

What are quarantined tests, and how do I read logs for their failures? I can see some of them are failing (in test_views.py and test_local_task_jobs.py), but can’t find what tests exactly and why.

[kaxil]

What are quarantined tests, and how do I read logs for their failures? I can see some of them are failing (in test_views.py and test_local_task_jobs.py), but can’t find what tests exactly and why.

Quarantined test failures can be ignored, they are mostly flaky tests, docs for it are here: https://github.com/apache/airflow/blob/master/TESTING.rst#quarantined-tests

Some of our tests are quarantined. This means that this test will be run in isolation and that it will be re-run several times. Also when quarantined tests fail, the whole test suite will not fail. The quarantined tests are usually flaky tests that need some attention and fix.

Those tests are marked with @pytest.mark.quarantined annotation. Those tests are skipped by default. You can enable them with --include-quarantined flag. You can also decide to only run tests with -m quarantined flag to run only those tests.