Quarantine group::runner core flaky specs
What does this MR do and why?
This is part of Flaky Test Intervention - part 1 (&19643 - closed) .
In this MR, we are to quarantine grouprunner core flaky specs as reported in https://gitlab.com/gitlab-org/quality/test-failure-issues/-/issues?sort=created_date&state=opened&label_name%5B%5D=failure%3A%3Aflaky-test&label_name%5B%5D=group%3A%3Arunner+core&or%5Blabel_name%5D%5B%5D=flakiness%3A%3A1&or%5Blabel_name%5D%5B%5D=flakiness%3A%3A2&or%5Blabel_name%5D%5B%5D=flakiness%3A%3A3¬%5Blabel_name%5D%5B%5D=quarantine&first_page_size=100
grouprunner core is responsible for fixing these specs before unquarantining them or remove them if they are no longer valid.
References
Related to https://gitlab.com/gitlab-org/quality/test-failure-issues/-/issues/5181
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