How to add JVM settings on Child container

Issue

• In JBoss Fuse 6.1 we could attach a remote debugger by adding -Xdebug -Xrunjdwp:transport=dt_socket,address=8281,server=y,suspend=n to an instance in FUSE_INSTALL_DIR/instances/instances.properties. In fuse 6.2.1 this no longer works, because instances.properties gets overwritten when I restart a container. What is the right way to enable remote debugging on JBoss Fuse 6.2.1?
• I need to be able to increase the JVM heap size of a child container on JBoss Fuse Fabric. How does one do this.
• Change jvmSettings in the hawtio interface