Merge branch 'mjog/lru-cache-intermittent-test-failure' into 'gnome-3-36'

Util.Cache.Lru: Fix intermittent unit test failure

Closes #739 (closed)

See merge request !435 (merged)

(cherry picked from commit ac8c176e)

6da19c5b Util.Cache.Lru: Fix intermitted unit test failure