Bump oslo.policy to 3.12.0

It allows us to revert temporary fix part from [1] as now InvalidScope
exception is properly handled by oslo.policy.

[1] https://review.opendev.org/c/openstack/neutron/+/826872

Related-bug: #1959333
Change-Id: I6b42306479c134ad8b07b8bf87d5c650fef9faae

lower-constraints.txt

@@ -67,7 +67,7 @@ oslo.i18n==3.20.0
 oslo.log==4.5.0
 oslo.messaging==7.0.0
 oslo.middleware==3.31.0
-oslo.policy==3.10.1
+oslo.policy==3.12.0
 oslo.privsep==2.3.0
 oslo.reports==1.18.0
 oslo.rootwrap==5.15.0

neutron/policy.py

@@ -483,19 +483,10 @@ def check(context, action, target, plugin=None, might_not_exist=False,
                                                      action,
                                                      target,
                                                      pluralized)
-    # TODO(slaweq): this try..except.. block can be removed when bug
-    # https://bugs.launchpad.net/oslo.policy/+bug/1965315 will be fixed in
-    # oslo.policy
-    try:
-        result = _ENFORCER.enforce(match_rule,
-                                   target,
-                                   credentials,
-                                   pluralized=pluralized)
-    except policy.InvalidScope:
-        log_rule_list(match_rule)
-        LOG.debug("Failed policy check for '%s'", action)
-        result = False
-    return result
+    return _ENFORCER.enforce(match_rule,
+                             target,
+                             credentials,
+                             pluralized=pluralized)
 
 
 def enforce(context, action, target, plugin=None, pluralized=None):

requirements.txt

@@ -33,7 +33,7 @@ oslo.i18n>=3.20.0 # Apache-2.0
 oslo.log>=4.5.0 # Apache-2.0
 oslo.messaging>=7.0.0 # Apache-2.0
 oslo.middleware>=3.31.0 # Apache-2.0
-oslo.policy>=3.10.1 # Apache-2.0
+oslo.policy>=3.12.0 # Apache-2.0
 oslo.privsep>=2.3.0 # Apache-2.0
 oslo.reports>=1.18.0 # Apache-2.0
 oslo.rootwrap>=5.15.0 # Apache-2.0