First set of commits add SUSE support to the crowbar barclamp in pebbles

All of these commits where cherry-picked (with small adjustments to resolve conflicts) from https://github.com/SUSE-Cloud/barclamp-crowbar/commits/release/essex-hack-suse/master. And should bring the crowbar barclamp to a state where the first chef-client run during install-chef-suse succeeds.

(More pull requests for this barclamp to bring in the rest of the SUSE changes to follow)