As far as I can tell, there's currently no way to search this list other than
month-by-month via the pipermail archive page
<https://lists.wikimedia.org/pipermail/cloud/>?
Not sure what the process is here, but I gather (from T193572
<https://phabricator.wikimedia.org/T193572>) that each list has to individually
approve being indexed by google. If that's the case, then I propose this list be
indexed.