Document collecting must-gather with alternative runtimes

[tnozicka]

Sometimes podman or docker are not available on servers, so the "same" commands should be run with complementary tools like crictl or ctr. As the ultimate fallback we should documment using kubectl that oveone has but it needs RBAC setup.

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/lifecycle stale

[tnozicka]

/remove-lifecycle stale /triage accepted