Description of problem:
When editing cloudinit scripts using the scripts tab, comments in the code disapear

Version-Release number of selected component (if applicable):

How reproducible:

Steps to Reproduce:
1. create a vm using the wizard
2. go to review page
3. copy a cloud script that include comments into the YAML tab
4. edit the cloud init script using the scripts tab

Actual results:
remarks in the code disapear

Expected results:
remarks in the code are not changed

Additional info:
cloud init should not be parsed as YAML code, it is using cloud confic syntax