title: how to read environment variables in context.xml in open shift
body: <p>I have tried following things.</p>
  
  <pre><code>Added the secrets in Openshift.
  
  Create environmental variables based on the secrets.
  
  i have tried to refer the enviornments in tomcat context.xml using {$env.MY_KEY} , but i am unable to read it.
  </code></pre>
  
  <p>Could someone help me how to read that environment variable defined?</p>
  
  <p>Thanks</p>