Fixes #24217 - accept shell script for cloud-init in oVirt
Our default user_data template uses shell format for cloud-init: we should be able to use it for oVirt as well, especially after #24217 has been fixed.
Related issues
Bug #24217: Support shell script cloud-init format for oVirt
Fixes #24217 - accept shell script for cloud-init in oVirt
Our default user_data template uses shell format for cloud-init: we
should be able to use it for oVirt as well, especially after #24217
has been fixed.