Sending this here in case others want to try this too.

1,  Set MAVEN_OPTS=-Xmx1024m -XX:MaxPermSize=512M  -DXorg.apache.geronimo.kernel.config.Marshaler=org.apache.geronimo.kernel.config.xstream.XStreamConfigurationMarshaler
2,  Build a sample war to plugin with car-maven-plugin.   
3,  Check out the config.cer  in the built car, you can find that all the GBeans are in XML format that is very easy to read.


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Shawn