title: User address sub fields not showing in userinfo response
body: <p>I have added a mapper to my client with a mapper type of 'User Address' and enabled the 'Add to userinfo' option
  <a href="https://i.stack.imgur.com/2KIU6.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/2KIU6.png" alt="enter image description here"></a></p>
  
  <p>I have then set an address attribute on my user as follows:</p>
  
  <p><a href="https://i.stack.imgur.com/dLCtU.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/dLCtU.png" alt="enter image description here"></a></p>
  
  <p>When making a request to the userinfo endpoint I just get back an empty address object:</p>
  
  <p><a href="https://i.stack.imgur.com/65wfn.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/65wfn.png" alt="enter image description here"></a></p>
  
  <p>Have I missed out something here? We are using keycloak 3.2.1 also.</p>
  
  <p>Thanks</p>