lfs: add the 'Content-Type' header called out in the file transfer spec
https://github.com/git-lfs/git-lfs/blob/master/docs/api/basic-transfers.md#uploads
--- a/hgext/lfs/blobstore.py Sun Feb 25 23:44:02 2018 -0500
+++ b/hgext/lfs/blobstore.py Sat Feb 24 19:56:59 2018 -0500
@@ -332,6 +332,7 @@
hint=_('run hg verify'))
request.data = filewithprogress(localstore.open(oid), None)
request.get_method = lambda: 'PUT'
+ request.add_header('Content-Type', 'application/octet-stream')
for k, v in headers:
request.add_header(k, v)