Bump kubevirtci, switch to default KUBEVIRT_PROVIDER=k8s-1.18
kubevirtci before k8s-1.18 doesn't work on Ryzen CPUs.
We need to bump kubevirtci to have this lane.
# See the License for the specific language governing permissions and
# limitations under the License.
-export KUBEVIRT_PROVIDER=${KUBEVIRT_PROVIDER:-'k8s-1.17'}
+export KUBEVIRT_PROVIDER=${KUBEVIRT_PROVIDER:-'k8s-1.18'}
-KUBEVIRTCI_VERSION="9d224d0c22e9ed2ca7588ccf3a258d82e160b195"
+KUBEVIRTCI_VERSION="29a73d524b1a6141e7b4ae04a7e1a270dc2696e9"
KUBEVIRTCI_PATH="${PWD}/_kubevirtci"
function kubevirtci::install() {
