get_nodes: add debug msg

Add a dump of the network and node information that is turned off
by default. Only displays if config.verbosity has debug.

Change-Id: I2781489196ee593d41025e57c962dbec7b6e6be7
new role, rdopkg/update

Allows specifying a tarball containing RPMs to be transferred
to the instance, unpacked, and the RPMs therein force installed.

Change-Id: I3461c64dfb91e29ebbfe90292bb576edc57b38e8
run.sh: add checks and clean exit

add check for repo_settings.yml and a clean exit for clean.sh to
execute after run.sh

Change-Id: I386db477bbda2d0b537df23102c2583b4166d434