Print imported information after running config import

[blanquicet]

Originally posted by @blanquicet in #52 (comment):

If we check, we always execute config show after a config import. I started thinking that we should automatically print the imported data in the config import (maybe with a --quiet flag). Also for the documentation, it makes things more consistent. For instance:

Import node info:

kubectl aks config import

Run command against one of the nodes:

kubectk aks run-command --node <myNode>

Users will take the node name from the previous config import output, they we don't need to ask them to also run config show.