[S-RBAC] Get QoS rule types API available for READER role

API call "get_rule_types" should be available in new policies for
all users with READER role as this is kind of the same what was in the
old policies (ANY).

Depends-On: https://review.opendev.org/c/openstack/neutron-tempest-plugin/+/882818

Closes-Bug: #2018585
Change-Id: I8281bd8a902bcaba1187565e9610d598e4ebc254
(cherry picked from commit 01de74d)
(cherry picked from commit c82eee0)

neutron/conf/policies/qos.py

@@ -103,7 +103,11 @@
 
     policy.DocumentedRuleDefault(
         name='get_rule_type',
-        check_str=base.ADMIN,
+        # NOTE(ralonsoh): it can't be ADMIN_OR_PROJECT_READER constant from the
+        # base module because that is using "project_id" in the check string
+        # and the rule type resource don't belongs to any project thus such
+        # check string would fail enforcement.
+        check_str='role:reader',
         scope_types=['project'],
         description='Get available QoS rule types',
         operations=[

neutron/tests/unit/conf/policies/test_qos.py

@@ -210,12 +210,6 @@ def setUp(self):
         super(ProjectMemberQosRuleTypeTests, self).setUp()
         self.context = self.project_member_ctx
 
-    def test_get_rule_type(self):
-        self.assertRaises(
-            base_policy.PolicyNotAuthorized,
-            policy.enforce,
-            self.context, 'get_rule_type', self.target)
-
 
 class ProjectReaderQosRuleTypeTests(ProjectMemberQosRuleTypeTests):