This is no longer supported. JBoss Fuse 6.x is a standalone application that has its own container (based on Apache Karaf). The current 6.x release requires running on top of Apache Karaf.
Though we have plans to make Fuse (that would be Fuse Fabric) container agnostic so you in the future would be able to run Fuse on JBoss AS, Tomcat, Karaf, Standalone, in the cloud, etc. Though we focus on JBoss AS, Tomcat, and Karaf as the main containers at first we aim to support.