fix(policy): update policy_map by calling add_policy for each rule

Author: Victor-Bayim

Diff for: casbin/model/policy.py

@@ -154,7 +154,8 @@ def add_policies(self, sec, ptype, rules):
                 return False
 
         for rule in rules:
-            self[sec][ptype].policy.append(rule)
+            if not self.add_policy(sec, ptype, rule):
+                return False
 
         return True