bump war plugin version to the one working on JDK9

lukasj · lukasj · commit 693647512934 · 2017-08-08T19:22:24.000+02:00
Signed-off-by: Lukas Jungmann &lt;lukas.jungmann@oracle.com&gt;
diff --git a/pom.xml b/pom.xml
@@ -200,7 +200,7 @@
                 <plugin>
                     <groupId>org.apache.maven.plugins</groupId>
                     <artifactId>maven-war-plugin</artifactId>
-                    <version>3.0.0</version>
+                    <version>3.1.0</version>
                 </plugin>
                 <plugin>
                     <groupId>org.apache.maven.plugins</groupId>
