title: log4j2.properties set logger level to many packages
body: <p>AFAIK the logger level for a package/class in log4j2 properties file should be set like below.</p>
  
  <pre><code>loggers = abc
  logger.abc.name = com.abc.MyClass
  logger.abc.level = INFO
  </code></pre>
  
  <p>So if I have 50 classes/packages to specify, does it mean I have to have 50 entries in <code>loggers</code> and 50 of entries for each <code>name</code> and <code>level</code>.</p>
  
  <p>Is not there an alternative way to do it with one line for each logger so it can be done in 50 lines?</p>