Make flakey tests more lenient

[alerickson]

PR Summary

This is the first attempt to deal with flakey CI tests. The tests touched in this PR are impacted by PSGallery Lucene indexing issues. Tests that expect a minimum of x number of results returned now only expect a minimum of 1. This is because when Lucene issues occur, not all results will necessarily be returned.

PR Context

PR Checklist

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[alerickson]

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