1. virtio-win-1.9.10-3.el8 include win2019 drivers already;
2. installer is added according to bz1745298
So this bug is fixed, change status to verified.
The virtio-win build containing this fix, virtio-win-1.9.10-3.el8, was shipped as part of advisory RHEA-2020:0351-02 on 4 Feb 2020, but the bug was not attached to the advisory. Manually closing BZ.