I want to add some specific files like faces-config.xml in the JAR
generated for my AMP file.

I create src/main/resources/META-INF folder in my maven project and put
faces-config.xml there. When I run "mvn package", the file really ends up
in JAR META-INF folder.

However, another META-INF folder is also created in root folder of AMP
package, with the same faces-config.xml file. When I install such AMP to my
alfresco.war, I can see faces-config.xml in the following directory:

alfresco/WEB-INF/classes/META-INF

I think that this behaviour is wrong.