Extends the provisioning capabilities of the plugin to use a Channel to determine the versions of the component to provision instead of using the versions specified by the feature-pack(s).

This impacts the "provision" and "package" goals.

A new "channels" configuration parameter is introduced to specify the Maven GA(V) of the channel to use during provisioning.

This feature is backwards compatible and is only activated if the "channels" parameter is specified. Otherwise, versions of components to provision are taken from the feature-pack(s) as before.