pylint: Upgrade to 3.0

pylint 3.0 is required to support Python 3.12.

Change-Id: I20a6d061260b8ddc6dd60fdcd98d9d1683acd068

cinder/backup/chunkeddriver.py

@@ -44,6 +44,8 @@ from cinder.volume import volume_utils
 
 if sys.platform == 'win32':
     from os_win import utilsfactory as os_win_utilsfactory
+else:
+    os_win_utilsfactory = None
 
 LOG = logging.getLogger(__name__)
 

cinder/volume/drivers/dell_emc/powermax/common.py

@@ -4327,6 +4327,7 @@ class PowerMaxCommon(object):
         resume_original_sg_dict = dict()
         rdf_pair_broken = False
         resume_original_sg = False
+        rep_extra_specs = dict()
         is_partitioned = False
         if (was_rep_enabled and not is_rep_enabled) or backend_ids_differ:
             if self.promotion:

tox.ini

@@ -107,7 +107,7 @@ allowlist_externals =
 install_command = {[testenv:py3]install_command}
 deps = -r{toxinidir}/requirements.txt
        -r{toxinidir}/test-requirements.txt
-       pylint==2.17.0
+       pylint==3.0.2
 commands =
   {toxinidir}/tools/coding-checks.sh --pylint {posargs:all}