Ensure gitaly nodes always running before e2e start/finish

Description of the test

Similar approach as in !73592 (merged) finding places where containers may not be running prior to tests starting which may be leading to flakiness in the tests.

May help to resolve #321440 (closed)

Job is passing and can be seen: https://gitlab.com/gitlab-org/gitlab-qa-mirror/-/jobs/1742379901

Check-list

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