title: Spring boot with embedded tomcat + access log with authentication user
body: <p>I'm using spring boot with embedded tomcat + spring security. 
  My access log from tomcat seems like this </p>
  
  <p>IP - - [14/Feb/2017:08:49:50 +0200] "GET /page/2 HTTP/1.1" 200 2606</p>
  
  <p>So, how can i make log file to looks like </p>
  
  <p>IP - - [14/Feb/2017:08:49:50 +0200]  <strong>username</strong> - "GET /page/2 HTTP/1.1" 200 2606</p>
  
  <p>Every request have to have the username from which is made. For security authentication i'm using spring security with database username and password info.</p>