pre-commit: Bump versions

Change-Id: I35816774499bab3c2b1e36e096c108373b163c73
Signed-off-by: Takashi Kajinami <kajinamit@oss.nttdata.com>

.pre-commit-config.yaml

@@ -13,13 +13,13 @@ repos:
       - id: check-yaml
         files: .*\.(yaml|yml)$
   - repo: https://opendev.org/openstack/hacking
-    rev: 7.0.0
+    rev: 8.0.0
     hooks:
       - id: hacking
         additional_dependencies: []
         exclude: '^(doc|releasenotes|tools)/.*$'
   - repo: https://github.com/asottile/pyupgrade
-    rev: v3.20.0
+    rev: v3.21.2
     hooks:
       - id: pyupgrade
         args: [--py3-only]

zaqar/common/auth.py

@@ -75,8 +75,6 @@ def create_trust_id(auth_plugin, trustor_user_id, trustor_project_id, roles,
 
 def get_public_endpoint():
     """Get Zaqar's public endpoint from keystone"""
-    global _ZAQAR_ENDPOINTS
-
     if _ZAQAR_ENDPOINTS:
         return _ZAQAR_ENDPOINTS