Bugfix on Symfony Role mapping

* Roles must be prefixed with `ROLE_` for Symfony to support them
* Use resource name vs last account-name
* Assign roles as strings vs Role instances

src/Client.php

@@ -71,7 +71,7 @@ public function getUserByUsername($username)
             foreach ($policyData['action'] as $action) {
                 $policy->addAction($action);
                 if ($policy->getEffect() == 'allow') {
-                    $roleName = 'xrn:' . $this->partition . ':userbase::account/' . $account->getName();
+                    $roleName = 'ROLE_' . $policy->getResource();
                     $roleName .= '@' . $action;
                     $user->addRole($roleName);
                 }

src/Model/User.php

@@ -245,7 +245,6 @@ public function getPolicies()
 
     public function addRole($roleName)
     {
-        $role = new Role($roleName);
-        $this->roles[] = $role;
+        $this->roles[] = $roleName;
     }
 }