Comment 2 for bug 1657246

So the regression definitely seems to have been introduced by https://review.openstack.org/#/c/156923/

I see three different ways we could address it, but I'm not sure which is best. Maybe some combination?

1. Make copy more picky about when it sets orig_req_method, as in http://paste.openstack.org/show/601652/

2. Make SLO consciously opt out of any orig_req_method that may be set, as in http://paste.openstack.org/show/601653/

3. Make proxy-logging only respect orig_req_method when swift.source is unset (i.e., for client requests), as in http://paste.openstack.org/show/601654/