title: maven: specify settings.xml location in pom
body: <p><strong>Requirement</strong>: we need the central control over settings.xml for some portion of it for example mirror configuration </p>
  
  <p>and some of the sections needs to be user specific [for example: credentials]</p>
  
  <p>So the idea is to put the common settings.xml under source control (for example: svn) and configure parent pom so that it can take the common settings.xml at location (for example <code>${user.home}/abc/def/settings.xml</code>)</p>
  
  <p>and we need to include user specific settings.xml for some of the user specific things</p>