ConfigDrive functionality broken for Xen/XCP-Ng

[NuxRo]

problem

A VM with cloud-init and all the shebang deployed on a ConfigDrive-enabled network on CXP-Ng is not configured at all.
The CD is not even detected.

versions

ACS 4.20 XCP-Ng 8.2

The steps to reproduce the bug

1. Create isolated network with ConfigDrive
2. Deploy VM
3. Check VM - it is not configured
   ...

What to do about it?

Research and fix.

[NuxRo]

Ok, so I feel pretty dumb for not knowing this, but XenServer won't allow you to have more than 1 CD-ROM active at any one time.
This means the guest never sees the 2nd one we add for ConfigDrive.

Workaround: use a regular disk drive, labelled the same etc, cloud-init can deal with it.

This has just become a bigger job..

Might be an idea to implement same for KVM, too, for consistency.

[DaanHoogland]

@vishesh92 , I see your implementation on 4.19. Given @NuxRo 's explanation above, should we move this to a later version?