Immediately flush the console log

src/main/java/envoy/util/EnvoyLog.java

@@ -60,7 +60,17 @@ public class EnvoyLog {
 		} catch (SecurityException | IOException e) {
 			e.printStackTrace();
 		}
-		consoleHandler = new StreamHandler(System.out, formatter);
+		consoleHandler = new StreamHandler(System.out, formatter) {
+
+			/**
+			 * {@inheritDoc}
+			 */
+			@Override
+			public synchronized void publish(LogRecord record) {
+				super.publish(record);
+				flush();
+			}
+		};
 		consoleHandler.setLevel((Level) config.get("consoleLevelBarrier").get());
 		consoleHandler.setFormatter(formatter);