With url encoded object name like '%25ff' that can be url-encoded
value after decoded can cause 412 Precondition Failed. And more,
that can do nothing (no versioned object creation) even it returns
a successful response.
The root causes are in versioned_writes middleware as follows:
A. unnecessary unquote in object_request method
B. incorrect use of make_pre_authed_request that takes 'quoted'
path in the args. That is described at [1] explicitely.
This patch resolved those 2 bugs at once, and then, now we can create
%25ff versioned object reported in the launchpad with this patch.
Perhaps, more tests would be nice to have. This patch added a few
test cases on that.
1: https://github.com/openstack/swift/blob/master/swift/common/wsgi.py#L1174
Note that make_subrequest and its caller should have *quoted* path but
make_env should *NOT*. That might make us confused.
Closes-Bug: #1755554
Change-Id: Ibcd90cc633c68973929ee5249c6598c22b342e3e
0e3e7b9b09