title: Is there anyway with Jenkins Git plugin to set merge-strategy option to 'theirs'?
body: <p>I'm using Jenkins with the Git Plugin.  Facts:</p>
  
  <ul>
  <li>I have 2 branches <code>develop</code> and <code>rc</code> with the same ancestor. </li>
  <li><code>develop</code> is at commit <code>635d361d2005f74dd55f274bf409d43d6413d9b0</code></li>
  <li>I'm try to merge <code>develop</code> it into <code>rc</code></li>
  <li>A change has been made to a file <code>x.html</code> independently in both branches that causes a conflict when merging</li>
  <li>I always want <code>develop</code> changes to trump <code>rc</code> changes when conflict occurs</li>
  </ul>
  
  <p>In the project via the git plugin, I've added an additional behavior "Merge before build" and I can set the strategy to be "recursive".  </p>
  
  <p><img src="https://i.stack.imgur.com/EJqVq.png" alt="Screenshot of Jenkins Git Plugin Additional Behavior Config"></p>
  
  <p>This configuration generates a merge that looks like this when run:</p>
  
  <pre><code> git checkout -f origin/rc
   git merge -s recursive 635d361d2005f74dd55f274bf409d43d6413d9b0
  </code></pre>
  
  <p>However, I can't seem to specify the any strategy options, so this just generates a conflict.</p>
  
  <p>Specifically I'm trying to do a merge accept theirs on conflict like below:</p>
  
  <pre><code>  git checkout -f origin/rc
    git merge -s recursive  --strategy-option theirs 635d361d2005f74dd55f274bf409d43d6413d9b0
  </code></pre>
  
  <p>Can this be achieved with the plugin?</p>