Tomcat managed should not require an installed tomcat server

When starting up tomcat6-managed, the first SNAPSHOT, I get this:

Either CATALINA_HOME environment variable or catalinaHome property in Arquillian configuration must be set and point to a valid directory! null is not valid directory!

There are 2 problems with this:

• it's a maintenance hurdle, especially on hudson build slaves
• the build is not reproducible: the test results depends on the tomcat server version you've installed on your machine.

Solution:
Set the tomcat zip as a dependency (so it's in ~/.m2/repository) and unzip it to target and use that server installation.