allow STOP_TIMEOUT to be configured
use a release of the drools execution server
fixes #2459 to use correct links to versions in REST API
fixes #2460 so there's a containers link on a profile in the REST API
fixed context path for drools execution server
trim the tomcat distro down so it doesn't come with docs and examples
fixes #2471
fixes #2464 so we register the httpUrl in the ZK registry for tomcat/jetty/wildfly too