title: Trigger release stage from completing PR
body: <p>Currently I have a release pipeline like so:</p>
  
  <p>The artifact has a <code>pull request trigger</code> to the <code>master</code> branch. So each time there's a PR to master this release is triggered.</p>
  
  <p><a href="https://i.stack.imgur.com/UU86P.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/UU86P.png" alt="enter image description here"></a></p>
  
  <p>On my master branch I have a <code>status policy</code> for <code>VSTS-RM/Pokedex Release</code> which is the name for the release pipeline. In my PR I can see the policy working.</p>
  
  <p>So when I create a new PR the build pipeline is triggered to create a new build of that branch. If the build is successful the <code>development</code> stage in the <code>Pokedex Release</code> pipeline is triggered. So this all works fine.</p>
  
  <p>When I complete the PR the development branch is merged into master. But there's nothing happening in the <code>production</code> stage of the <code>Pokedex Release</code> pipeline. </p>
  
  <p><a href="https://i.stack.imgur.com/mT0uT.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/mT0uT.png" alt="enter image description here"></a></p>
  
  <p>This is the <code>Pre-deployment conditions</code> configuration from the <code>Production</code> stage:</p>
  
  <p><a href="https://i.stack.imgur.com/ouN4T.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/ouN4T.png" alt="enter image description here"></a></p>
  
  <p>So without any triggers it's not too weird that nothing is happening.</p>
  
  <p>So how do I trigger the <code>production</code> stage in the current <code>Pokedex release</code> pipeline from completing a PR?</p>