config: set requests permission policy defined in rdm-records

* this is necessary to allow guests to access the guest request access
  details via the access request tokens

invenio_app_rdm/config.py

@@ -48,6 +48,7 @@
     CommunityServiceComponents,
 )
 from invenio_rdm_records.services.errors import InvalidCommunityVisibility
+from invenio_rdm_records.services.permissions import RDMRequestsPermissionPolicy
 from invenio_rdm_records.services.stats import permissions_policy_lookup_factory
 from invenio_records_resources.references.entity_resolvers import ServiceResultResolver
 from invenio_stats.aggregations import StatAggregator
@@ -1154,3 +1155,12 @@ def github_link_render(record):
 
 USERS_RESOURCES_SERVICE_SCHEMA = NotificationsUserSchema
 """Schema used by the users service."""
+
+
+# Invenio-Requests
+# =================
+# See https://github.com/inveniosoftware/invenio-requests/blob/master/invenio_requests/config.py  # noqa
+
+
+REQUESTS_PERMISSION_POLICY = RDMRequestsPermissionPolicy
+"""The requests permission policy, extended to work with guest access requests."""