qa_crowbarsetup: prevent being sourced from mkcloud
qa_crowbarsetup: prevent being sourced from mkcloud

The idea is to untie mkcloud and qa_crowbarsetup.
This should allow to change mkcloud more radical.
Shared parts of mkcloud and qa_crowbarsetup should
be moved to the common files.

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