Same testing done on Bionic with the ~bpo18.04.1 packages:
$ uvt-simplestreams-libvirt --verbose sync release=focal arch=amd64 Adding: com.ubuntu.cloud:server:20.04:amd64 20220207
$ uvt-simplestreams-libvirt query release=focal arch=amd64 label=release (20220207)
Same testing done on Bionic with the ~bpo18.04.1 packages:
$ uvt-simplestrea ms-libvirt --verbose sync release=focal arch=amd64 cloud:server: 20.04:amd64 20220207
Adding: com.ubuntu.
$ uvt-simplestrea ms-libvirt query
release=focal arch=amd64 label=release (20220207)