Update to match latest development cycle

Update python supported versions
Update tox versions and options

Change-Id: I1aa3916b177c4a12249355fe281303e556b26254

setup.cfg

@@ -20,6 +20,7 @@ classifier =
     Programming Language :: Python :: 3.8
     Programming Language :: Python :: 3.9
     Programming Language :: Python :: 3.10
+    Programming Language :: Python :: 3.11
 
 [files]
 packages =

test-requirements.txt

@@ -1,12 +1,7 @@
-# The order of packages is significant, because pip processes them in the order
-# of appearance. Changing the order has an impact on the overall integration
-# process, which may cause wedges in the gate later.
-
-coverage!=4.4,>=4.0 # Apache-2.0
-doc8>=0.6.0 # Apache-2.0
+coverage>=4.0 # Apache-2.0
 python-subunit>=1.0.0 # Apache-2.0/BSD
 oslotest>=3.2.0 # Apache-2.0
 testrepository>=0.0.18 # Apache-2.0/BSD
 testscenarios>=0.4 # Apache-2.0/BSD
 testtools>=2.2.0 # MIT
-stestr>=1.0.0 # Apache-2.0
+stestr>=2.0.0 # Apache-2.0

tox.ini

@@ -1,10 +1,10 @@
 [tox]
-minversion = 3.18.0
+minversion = 4.4.0
 envlist = py3,pep8
 ignore_basepython_conflict=true
 
 [testenv]
-basepython = python3
+constrain_package_deps = true
 usedevelop = True
 setenv = VIRTUAL_ENV={envdir}
          PYTHONDONTWRITEBYTECODE = 1
@@ -28,10 +28,10 @@ passenv =
 
 [testenv:pep8]
 deps=
-    hacking~=6.0.0 # Apache-2.0
-    flake8-import-order>=0.17.1 # LGPLv3
+    hacking~=6.1.0 # Apache-2.0
+    flake8-import-order~=0.18.0 # LGPLv3
     pycodestyle>=2.0.0,<3.0.0 # MIT
-    doc8>=0.8.1 # Apache-2.0
+    doc8~=1.1.0 # Apache-2.0
 commands =
     flake8 {posargs}
     doc8 README.rst CONTRIBUTING.rst HACKING.rst doc/source