Ответ 1
Не требуется определение плагинов, просто отредактируйте ресурсы сборки:
<build>
<resources>
<!-- regular resource processsing for everything except logback.xml -->
<resource>
<directory>src/main/resources</directory>
<excludes>
<exclude>logback.xml</exclude>
</excludes>
</resource>
<!-- resource processsing with a different output directory
for logback.xml -->
<resource>
<directory>src/main/resources</directory>
<includes>
<include>logback.xml</include>
</includes>
<!-- relative to target/classes
i.e. ${project.build.outputDirectory} -->
<targetPath>..</targetPath>
</resource>
</resources>
</build>
Справка: