qa/suites/rgw/tempest: use the latest tempest supporting py3.5

in case we need to use ubuntu xenial for testing, xenial only had python
3.5 packaged. and tempest 23.0 was the last version which supports
python3.5 and python2.7.

also do not replace link in tox.ini, as it is reachable.

to address the issues of

- pallets/markupsafe#116
- pypa/setuptools#2017

MarkupSafe is installed by
https://opendev.org/openstack/requirements/raw/branch/stable/pike/upper-constraints.txt

Signed-off-by: Kefu Chai <kchai@redhat.com>

qa/suites/rgw/tempest/tasks/rgw_tempest.yaml

@@ -40,7 +40,7 @@ tasks:
       use-keystone-role: client.0
 - tempest:
     client.0:
-      sha1: d3fa46495a78160989120ba39793f7ba2e22d81c
+      sha1: d43223773d75d2e82fb33a1281038e611c41d0f3
       force-branch: master
       use-keystone-role: client.0
       auth:

qa/tasks/tempest.py

@@ -60,15 +60,6 @@ def download(ctx, config):
         sha1 = cconf.get('sha1')
         if sha1 is not None:
             run_in_tempest_dir(ctx, client, [ 'git', 'reset', '--hard', sha1 ])
-
-        # tox.ini contains a dead link, replace it with the new one
-        from_url = 'https://git.openstack.org/cgit/openstack/requirements/plain/upper-constraints.txt'
-        to_url = 'https://opendev.org/openstack/requirements/raw/branch/stable/pike/upper-constraints.txt'
-        run_in_tempest_dir(ctx, client, [
-                'sed', '-i',
-                run.Raw('"s|{}|{}|"'.format(from_url, to_url)),
-                'tox.ini'
-            ])
     try:
         yield
     finally: