qs and query in request_history are converted to lowercase

[ferenc-hechler]

In a text-callback for GET I used request.qs to get the original parameters as dict.
But all keys and values are converted to lowercase.

this bug seems to exist since a long time and it was fixed 2016 in the openstack version.

https://bugs.launchpad.net/requests-mock/+bug/1584008

As a workaround I used

from urllib import parse
...
def text_callback(request, context):
    qs = parse.parse_qs(parse.urlparse(request.url).query)

[vandoragroup]

Looks like the problem originates here:

requests-mock/requests_mock/request.py

Lines 60 to 61 in 9742d02

	if not self._case_sensitive:
	url = url.lower()

Note the fixme that looks pretty old:

requests-mock/requests_mock/request.py

Lines 42 to 44 in 9742d02

	# FIXME(jamielennox): This is part of bug #1584008 and should default
	# to True (or simply removed) in a major version bump.
	self._case_sensitive = kwargs.pop('case_sensitive', False)

I'll try putting together a fix.