Fix help message
Fix help message

Currently, if you run mkcloud with no arguments or the multitude of
scenarios to trigger the usage message, it is printed out and then
shows: onadmin_help: command not found.

onadmin_help is in qa_crowbarsetup, so source the file before running
the function.

SUSE-Cloud/automation,vmoravec/automation,vmoravec/automation,gosipyan/automation,aspiers/automation,SUSE-Cloud/automation,gosipyan/automation,aspiers/automation,SUSE-Cloud/automation,gosipyan/automation,gosipyan/automation,SUSE-Cloud/automation,vmoravec/automation,aspiers/automation,vmoravec/automation,aspiers/automation