title: Add additional dependency in maven-war-plugin
body: <p>In our web project there are a couple of executions of maven-war-plugin that generates war files for each environment. I need to add a new dependency to one of them. So far we have been doing this using overlays but this approach does not operate on drpendencies and as a result we often end up with the same library added twice in different versions. 
  Is there any way to create multiple wars per one build(not multiple builds with different profiles) with custom dependencies?</p>