Fix: the issue of kubevirt feature backwards compatibity

[naiming-zededa]

Description

• the PR kubevirt: Support kubevirt use virtio device #5638 introduced a regression. If the VMI on eve-k is already running, this new EVE image update won't automatically set the new feature item in kubevirt-feature.yaml, which can cause the VMI after update to fail to launch
• this patch have a migration path to detect if this video feature is not there, apply the patch to that.

PR dependencies

How to test and validate this PR

• run the EVE image before the PR kubevirt: Support kubevirt use virtio device #5638, and deploy VMs on the device
• upgrade the EVE image w/ this patch, and those VMs should still work

Changelog notes

Fix: the issue of kubevirt feature backwards compatibity

PR Backports

Checklist

• I've provided a proper description
• I've added the proper documentation
• I've tested my PR on amd64 device
• I've tested my PR on arm64 device
• I've written the test verification instructions
• I've set the proper labels to this PR

For backport PRs (remove it if it's not a backport):

• I've added a reference link to the original PR
• PR's title follows the template

And the last but not least:

• I've checked the boxes above, or I've provided a good reason why I didn't
  check them.

[eriknordmark]

Run tests

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 29.49%. Comparing base (2281599) to head (1fbfbd6).
⚠️ Report is 325 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #5647      +/-   ##
==========================================
+ Coverage   19.52%   29.49%   +9.96%     
==========================================
  Files          19       18       -1     
  Lines        3021     2417     -604     
==========================================
+ Hits          590      713     +123     
+ Misses       2310     1552     -758     
- Partials      121      152      +31     

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