title: Keycloak role policies are not persisted correctly
body: <p>Keycloak does not seem to save any modifications I make to role policies.</p>
  
  <p>When I configure my role policy inside keycloak and I click save, there is indeed a row added in the POLICY_CONFIG table inside my database. However when I reload the policy page inside the keycloak admin interface, the policy is empty again. I am not seeing any error inside the logs. </p>
  
  <h1>Steps to reproduce</h1>
  
  <h2>Configure policy</h2>
  
  <p><a href="https://i.stack.imgur.com/zXmZi.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/zXmZi.png" alt="Configure policy"></a></p>
  
  <h2>Save policy (successful)</h2>
  
  <p><a href="https://i.stack.imgur.com/jI5St.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/jI5St.png" alt="Save successfull"></a></p>
  
  <h2>Reload policy page</h2>
  
  <p>All fields are empty again. I waited a minute but nothing is being loaded.</p>
  
  <p><a href="https://i.stack.imgur.com/16S4Z.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/16S4Z.png" alt="Reload policy page"></a></p>
  
  <h2>Oracle database</h2>
  
  <h3>POLICY_CONFIG table</h3>
  
  <p>ID: </p>
  
  <pre><code>13b25a3a-95f9-4fb7-bbed-bb758c887c8d
  </code></pre>
  
  <p>TYPE: roles</p>
  
  <p>VALUE</p>
  
  <pre><code>[{"id":"fac49c05-2e78-40a3-98cc-e6206188ed8c","required":false},{"id":"a141db57-
  51b5-469d-9266-4bd14fcd024e","required":false},{"id":"679dbf0e-47da-449a-832a-28
  0c766381f4","required":false},{"id":"c4993ff8-32fa-4731-9b50-2b75084d1974","requ
  ired":false},{"id":"cdc2ac65-7bde-4883-a2b7-7a4af56770e1","required":false}]
  </code></pre>