Add check header rule and fixHeaders task

Add "new line" in the header end

* Optimization for the `fixHeaders.gradle`
* Apply the `fixHeaders` for the affected classes

spring-integration-syslog/src/test/java/org/springframework/integration/syslog/config/SyslogReceivingChannelAdapterParserTests.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2014 the original author or authors.
+ * Copyright 2002-2016 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -13,6 +13,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
+
 package org.springframework.integration.syslog.config;
 
 import static org.junit.Assert.assertEquals;

spring-integration-syslog/src/test/java/org/springframework/integration/syslog/inbound/SyslogDeserializerTests.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2014 the original author or authors.
+ * Copyright 2014-2016 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -13,6 +13,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
+
 package org.springframework.integration.syslog.inbound;
 
 import static org.junit.Assert.assertEquals;

spring-integration-syslog/src/test/java/org/springframework/integration/syslog/inbound/SyslogReceivingChannelAdapterTests.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2014 the original author or authors.
+ * Copyright 2002-2016 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -13,6 +13,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
+
 package org.springframework.integration.syslog.inbound;
 
 import static org.junit.Assert.assertEquals;