Revert "Make centos 9 stream jobs non-voting"

This reverts commit 30b484312fbec5b779c9553cf2d0298df47959d1.

Reason for revert:
The libvirt bug has been fixed in libvirt 10.0.0.

Change-Id: I62acbb437e894bf3fefb19bbb533aa8ba13a6bcf
1 file changed