editorconfig: max line length set

max line length warnings removed
missing Copyright added
useless publics removed
unmaintainable Javadoc tags: @author removed
helper class warnings removed
field default value initialization removed
Multiple warnings removed
pref: checkstyle warnings removed
Checkstyle will fail the build process if it detects violations
switch default cases error logger added

broker/src/test/java/io/moquette/server/ServerIntegrationQoSValidationTest.java

@@ -34,10 +34,6 @@ import java.io.IOException;
 import java.util.Properties;
 import static org.junit.Assert.assertEquals;
 
-/**
- *
- * @author andrea
- */
 public class ServerIntegrationQoSValidationTest {
 
     private static final Logger LOG = LoggerFactory.getLogger(ServerIntegrationPahoTest.class);