title: How to specify active profiles in Maven3
body: <p>Our application consists of various active profiles (say A1, A2, A3, A5 ...) which were separately defined in a profiles.xml file. Maven 3 expects all the profile information to be stored as part of the pom.xml file itself. </p>
  
  <p>How should I specify the list of active profiles within a pom.xml file, so that I can avoid specifying them in the command line (e.g. mvn -PA1,A2,A3,A5)</p>