maven-clean-plugin

            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-clean-plugin</artifactId>
                <version>3.0.0</version>
                <executions>
                    <execution>
                        <id>auto-clean</id>
                        <phase>initialize</phase>
                        <goals>
                            <goal>clean</goal>
                        </goals>
                    </execution>
                </executions>
                <configuration>
                    <verbose>true</verbose>
                    <filesets>
                        <fileset>
                            <directory>${project.build.outputDirectory}</directory>
                            <includes>
                                <include>**/*</include>
                            </includes>
                        </fileset>
                    </filesets>
                </configuration>
            </plugin>