title: Groovy findFiles in upper level directory
body: <p>I am using Jenkins to do a build, and I need to get a list of files.  We had a jenkins file pipeline script that worked great.  We then had to re-arrange the file structure and now findFiles is not finding files.  The code looks like this:</p>
  
  <pre><code>feature_files = findFiles(glob: '${WORKSPACE}/../feature-*/package.json')
  echo "finding files:${WORKSPACE}/../feature-*/package.json"
  filecount = feature_files.size()
  echo "file count:${filecount}"
  </code></pre>
  
  <p>now when the first line looked like this:</p>
  
  <pre><code>feature_files = findFiles(glob: '${WORKSPACE}/feature-*/package.json')
  </code></pre>
  
  <p>It worked fine.  When I take the output from the first echo,  and use that to do a "ls" on the box,  it lists the files correctly, so they are there.</p>
  
  <p>Does the ".."  not work with findFiles() in groovy?</p>