Someone

  <plugins>
    <plugin>
      <groupId>org.apache.maven.plugins</groupId>
      <artifactId>maven-war-plugin</artifactId>
      <version>2.0</version>
      <configuration>

       <filters>
        <filter>src/main/filters/config.${deploy.mode}</filter>
       </filters>

        <webResources>
          <resource>
            <!-- this is relative to the pom.xml directory -->
            <directory>resources</directory>
            <targetPath>WEB-INF</targetPath>
            <filtering>true</filtering>
          </resource>
        </webResources>
       </configuration>
     </plugin>
  </plugins>

  </build>