I finally used the maven-clean-plugin :
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-clean-plugin</artifactId>
<version>2.4.1</version>
<executions>
<execution>
<id>clean-dsf-server</id>
<phase>package</phase>
<goals>
<goal>clean</goal>
</goals>
<configuration>
<excludeDefaultDirectories>true</excludeDefaultDirectories>
<filesets>
<filesets>
<directory>${tomcat.dsf.dir}/lib/pacifisc</directory>
<includes>
<include>${project.artifactId}*.jar</include>
</includes>
</filesets>
</filesets>
</configuration>
</execution>
</executions>
</plugin>