qa_crowbarsetup: add+use get_proposal_filename function
qa_crowbarsetup: add+use get_proposal_filename function

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