Add support for passing system properties in the Maven plugin

I've attached a patch that will allow you to set system properties in cargo just like the test plugin with maven.junit.sysproperties:
http://maven.apache.org/reference/plugins/test/properties.html

I've chosen
cargo.container.$

.sysproperties
as the property, a sample looks like:

cargo.container.tomcat.sysproperties = sysprop1 sysprop2
sysprop1 = true
sysprop2 = foobar

I don't know anything about jelly scripts, it's working for me, but it should better be tested

Thanks Jan. I've applied your patch. Could you please also document it? For that you'll need to edit the wiki at http://docs.codehaus.org/display/CARGO/Maven+support.

If you create a user on confluence there, I'll add you to the cargo-developers group so that you have the rights to edit the pages.

Thanks again.

Thanks Jan.