Update setup and tox config

Change-Id: Ie14902a25f7bc958683ea9acad42970e533995a8

setup.cfg

@@ -7,6 +7,7 @@ long_description_content_type = text/markdown
 author = OpenStack
 author_email = openstack-discuss@lists.openstack.org
 home_page = https://docs.openstack.org/sushy/latest/
+python_requires = >=3.8
 classifier =
     Environment :: OpenStack
     Intended Audience :: Information Technology
@@ -16,10 +17,10 @@ classifier =
     Programming Language :: Python
     Programming Language :: Python :: 3 :: Only
     Programming Language :: Python :: 3
-    Programming Language :: Python :: 3.6
-    Programming Language :: Python :: 3.7
     Programming Language :: Python :: 3.8
     Programming Language :: Python :: 3.9
+    Programming Language :: Python :: 3.10
+    Programming Language :: Python :: 3.11
 
 [files]
 packages =

sushy_oem_idrac/resources/manager/manager.py

@@ -138,7 +138,7 @@ VFDD\
     @property
     @sushy_utils.cache_it
     def idrac_card_service(self):
-        """Property to reference `DelliDRACCardService` instance of this manager.
+        """Reference to `DelliDRACCardService` instance of this manager.
 
         """
         path = sushy_utils.get_sub_resource_path_by(

tox.ini

@@ -1,12 +1,13 @@
 [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
 install_command = pip install {opts} {packages}
-basepython = python3
 setenv =
    VIRTUAL_ENV={envdir}
    PYTHONWARNINGS=default::DeprecationWarning
@@ -18,9 +19,10 @@ commands = stestr run --slowest {posargs}
 
 [testenv:pep8]
 deps =
-  hacking>=4.1.0,<5.0.0 # Apache-2.0
-  flake8-import-order>=0.17.1 # LGPLv3
-  pycodestyle>=2.0.0,<3.0.0 # MIT
+    hacking~=6.0.0 # Apache-2.0
+    flake8-import-order>=0.17.1 # LGPLv3
+    pycodestyle>=2.0.0,<3.0.0 # MIT
+    -c{env:TOX_CONSTRAINTS_FILE:https://releases.openstack.org/constraints/upper/master}
 commands = flake8 {posargs}
 
 [testenv:venv]