[findbugs] Respect exclude filter in maven build

Change-Id: Ic29310dc14f120ebdb49d33cbf4bd6d380ae1393
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>

org.eclipse.jgit/pom.xml

@@ -147,6 +147,7 @@
             <configuration>
                <findbugsXmlOutput>true</findbugsXmlOutput>
                <failOnError>false</failOnError>
+               <excludeFilterFile>findBugs/FindBugsExcludeFilter.xml</excludeFilterFile>
             </configuration>
             <executions>
                <execution>