acl: Associate policy ID

acl/cache.go

@@ -58,6 +58,7 @@ func (c *Cache) getPolicy(id, rules string) (*Policy, error) {
 	if err != nil {
 		return nil, err
 	}
+	policy.ID = id
 	c.policyCache.Add(id, policy)
 	return policy, nil
 

acl/policy.go

@@ -14,6 +14,7 @@ const (
 // Policy is used to represent the policy specified by
 // an ACL configuration.
 type Policy struct {
+	ID   string       `hcl:"-"`
 	Keys []*KeyPolicy `hcl:"key"`
 }