Split Cekit.run into run, configure
Split Cekit.run into run, configure

Split the run() method into a configure() method and a run()
method that calls it.

This means we can write tests for the configure() code without
invoking run() and generating Dockerfiles etc.

(Review tip: try ignoring whitespace changes with "git show HEAD -w")

Signed-off-by: Jonathan Dowland <c0ba515c40872faa4125f492781ab4f735e85bcc@redhat.com>

jboss-container-images/concreate,jboss-container-images/concreate,jboss-container-images/concreate