title: Registered callback does not match with the provided url in wso2 api manager 3.2.0
body: <p>I have two server that run in following addresses:</p>
  <pre><code>https://172.25.129.66:9443/publisher
  https://172.25.129.67:9443/publisher
  </code></pre>
  <p>I faced with following error in wso2 api manager 3.2.0 :</p>
  <pre><code>Registered callback does not match with the provided url 
  </code></pre>
  <p>And also I configured call back url in carbon as folowing :</p>
  <pre><code>regexp=(https://172.25.129.66:9443/publisher/services/auth/callback/login|https://172.25.129.66:9443/publisher/services/auth/callback/logout|https://172.25.129.67:9443/publisher/services/auth/callback/login|https://172.25.129.67:9443/publisher/services/auth/callback/logout) 
  </code></pre>
  <p>What is the problem that only <code>https://172.25.129.67:9443/publisher</code> has call back error?</p>