Trying to customize any of common templates and clicking create caused the 'No boot source available' dialog to pop - which should not happen as the template should have a boot source available

1. Navigate to Catalog > Templates catalog and select a template with a boot source available by clicking on it
2. Click Customize VirtualMachine
3. Click Customize VirtualMachine parameters
4. Click Create VirtualMachine
5. 'No boot source available' dialog pops

dialog pops and wars about VM creation

VM created with no dialog poping

1. Looking at the dataVolumeTemplate object in the YAML file and it looks like there's no source to it. We should check if this regression is coming from the template processing or some change introduced to our codebase to be responsible for this change.
2. QuickCreate is working as is