Add the ability to do a "features:addUrl [url]" to a Karaf/Fuse server

For SwitchYard projects on Fuse servers we generate a features.xml file that has a collection of all the bundled features that the project uses. For example, it might use switchyard-camel and switchyard-bean.

In order to successfully deploy that Fuse-based Switchyard project to the server, you have to do a "features:install switchyard-bean" and "features:install switchyard-camel" before installing the project on the server or you can use the features file:

features:addURL mvn:com.example.switchyard/switchyard-example/0.0.1-SNAPSHOT/features

And then install it.

features:install mvn:com.example.switchyard/switchyard-example/0.0.1-SNAPSHOT

But ultimately we need a better way of handling this in the tooling. Not sure how at this point. According to lheinema@redhat.com the plan was to support feature.xml deployment or KAR deployments at some time in the future.