feat(authz): make v2 request limits configurable

docs/Configuring.md

@@ -445,6 +445,11 @@ Root level key `authorization`
 | ------------------------------------------- | -------------------------------------------------------------- | ------- | --------------------- |
 | `entitlement_policy_cache.enabled`          | Enable the entitlement policy cache                            | `false` |                       |
 | `entitlement_policy_cache.refresh_interval` | How often to refresh the entitlement policy cache (e.g. `30s`) |         |                       |
+| `request_limits.resource_attribute_values_fqns_max` | Maximum attribute value FQNs allowed in Decision Requests | `20` | |
+| `request_limits.entity_identifier_entity_chain_entities_max` | Maximum entities allowed in Decision Request entity chains | `10` | |
+| `request_limits.decision_request_fulfillable_obligation_fqns_max` | Maximum fulfillable obligation FQNs allowed per Decision Request | `50` | |
+| `request_limits.get_decision_multi_resource_resources_max` | Maximum resources allowed in `GetDecisionMultiResourceRequest` | `1000` | |
+| `request_limits.get_decision_bulk_decision_requests_max` | Maximum decision requests allowed in `GetDecisionBulkRequest` | `200` | |
 
 #### Example: Authorization v1
 
@@ -464,6 +469,12 @@ services:
     entitlement_policy_cache:
       enabled: false
       refresh_interval: 30s
+    request_limits:
+      resource_attribute_values_fqns_max: 20
+      entity_identifier_entity_chain_entities_max: 10
+      decision_request_fulfillable_obligation_fqns_max: 50
+      get_decision_multi_resource_resources_max: 1000
+      get_decision_bulk_decision_requests_max: 200
 ```
 
 ### Entity Resolution