title: Change maven default repository
body: <p>in my company we have a proxy that inhibits downloading jars so evrey time i download a jar using maven i discover that it was corrupted.but i can download jars from https servers.
  My problem is that evrey time i use maven it always downloading from this repo <a href="http://repo1.maven.org/maven2/org/apache/maven" rel="nofollow">http://repo1.maven.org/maven2/org/apache/maven</a>
  i don't find it in setting.xml so i can change it with <a href="https://search.maven.org/" rel="nofollow">https://search.maven.org/</a>
  How can i change it 
  Thanks in advance</p>