Tim Burke 81db980690 s3api: Pass through CORS headers
This adds support for presigned GET URLs, at least.

Note that there is no support yet for preflight requests, so a whole
bunch of other CORS stuff *doesn't* work (yet). This was just an easy
first step.

Change-Id: I43150a630a2a7620099e6bfecaed3bbe958ba423
2021-03-01 10:55:15 -08:00
..