kie-server: add tomcat8x and wildfly8x profiles + tweak cargo configuration

 * using jboss-deployment-structure.xml and disabling CDI as Wildfly 8.x
   tries to start the CDI service and instantiate beans that should be
   actually managed by Guice. As of now CDI is not required for Kie Server

 * added download.url property for each container so the default can be
   overriden and the container does not have to be downloaded every time
   from remote location

 * using cargo deafult location for downloads and installs as there
   is no need to use the custom ones (this was just leftover from
   copy-pasting the config)
@mswiderski quite the contrary, your feedback is most welcome! I am just trying to understand what the problem is with disabling CDI as a whole. The new exec server is supposed to be CDI free, exactly to avoid some of the problems we faced with different containers. So in my mind disabling it as a whole is better than disabling it just for the bundle, *but* I am not sure what I am missing, based on your previous comment.