title: Azure "Availability Set" doesn´t show in other VMs configuration
body: <p>We´ve created a number of VMs on Azure and want to group those together into a "Frontend" availability set.</p>
  
  <p>So, we created a availability set in the config of the 1st VM:
  <img src="https://i.stack.imgur.com/2wzNF.png" alt="enter image description here"></p>
  
  <p>Unfortunately, on the other VMs it doesn´t show up in the dropdown.
  <img src="https://i.stack.imgur.com/TO5Ou.png" alt="enter image description here">
  Are we missing something? How can we add the other Servers to the set?</p>