Geo: Fix incorrect return values and a flaky test
What does this MR do and why?
- Fixes incorrect return values. When the check fails, it should return falsey, not a string.
- Fixes a flaky test (it was making an actual NTP request).
Resolves gitlab-org/quality/engineering-productivity/master-broken-incidents#5349 (closed)
Resolves #442813 (closed)
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Edited by Michael Kozono