Pull Request Template

Description

Minor patch.

Fixes #1339

How Has This Been Tested?

Manually inserted the changed vms.py file on my Debian 10.6 KVM server. Migration works with this patch.

Checklist:

• My commit message follow the pattern described in here
• I have signed-off my commit (git commit -s) to certify I have the rights to submit this work under the same license and agrees to a Developer Certificate of Origin (see http://developercertificate.org/ for more information).
• [X ] My code follows the style guidelines of this project and I have run make check-local to confirm it.
• I have run make to build the project and update any documentation that was added as part of this PR.
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes (Run make check to confirm it)