title: Azure Data Factory CI/CD - automatic publish after merge to master branch
body: <p>we are building CI/CD solution over our Azure Data Factory, and what I'm missing and what I was not able to get answer for after some searching is if there is possibility to automate publishing from collaboration branch to our <strong>adf_publish</strong> branch. So desired workflow should be:</p>
  <ol>
  <li>Create feature branch</li>
  <li>When you are satisfied with changes create pull request</li>
  <li>Pull request is approved and merged to collaboration(master) branch</li>
  <li>After merge, pipeline <strong>will automatically publish changes to development Azure Data Factory service</strong> and reflect the changes in <strong>adf_publish</strong> branch. Without someone <strong>pushing Publish button</strong> in UI.</li>
  <li>If necessary release pipelines are triggered from adf_publish branch to other environments</li>
  </ol>