fix(findbugs): resolve findbugs error

Author: hypery2k

Diff for: pom.xml

@@ -8,6 +8,7 @@
   </parent>
 
   <properties>
+    <jenkins.version>1.653</jenkins.version>
     <maven.compiler.source>1.7</maven.compiler.source>
     <maven.compiler.target>1.7</maven.compiler.target>
     <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>