title: where is Jenkins default maven-repository?
body: <p>I have <code>Jenkins ver.2.121.1</code> installed on <code>Windows Server 2012 R2</code> along with <code>Apache Maven 3.5.2</code>.<br>
  In <code>localhost:8080/systeminfo</code> link, <code>$MAVEN_HOME</code> environment variable is set correctly (to <code>C:\\apache-maven-3.5.2\</code>) and maven saves my custom libraries in <code>~\.m2\.repository\</code> but Jenkins saves the custom libraries(like ojdbc, ...) in 
   another directory (in <code>C:\\Program Files(x86)\Jenkins\maven-repositories\0\</code>). </p>
  
  <p>In jenkins <code>config.xml</code> (in <code>C:\\Program Files(x86)\Jenkins\config.xml</code>), no line is specified about maven local repositories (for example nothing is defined like <code>&lt;localRepository&gt;${env.HOME}/.m2/repository&lt;/localRepository&gt;</code>).<br>
  Is there any clear reason why Jenkins uses its own maven repository directory? Should I addres my own maven directory to force jenkins give priority to it?</p>