tomcat7-maven-plugin无法定位类路径上的属性文件。

I am trying to use "tomcat7-maven-plugin" to run integration test on war file. WHen the war gets dployed it basically load spring applicaitoncontext which in turns expect property files on classpath. In regular tomcat instance I keep property files somewhere on my machine and then configure catalina.properties -> common.loader to point to that directory. But I don't know how to achieve that with this plugin.I am trying to use "tomcat7-maven-plugin" to ru