qa_crowbarsetup: network.json moved to /etc/crowbar
supportconfig on error: omit /proc to work around bnc#829927

supportconfig has an option for skipping /proc!

An hour of experimenting can save you five minutes of reading the
manual!
set -+x in embedded nova test script
wait longer for image upload (the source may be remote)
use Cloud 2.0 for cloudsource=Beta*|RC*
testsetup: cloud instances must not see crowbar so don't ping it
C locale, otherwise grepping fdisk numbers fails

We'd get volumeattachret=1 because fdisk says
  1 073 741 824 bajtů
vs grep 1073741824