Remove wireguard interfaces when deleting the cluster

Signed-off-by: Manuel Buil <mbuil@suse.com>

install.sh

@@ -672,6 +672,8 @@ ip link delete cni0
 ip link delete flannel.1
 ip link delete flannel-v6.1
 ip link delete kube-ipvs0
+ip link delete flannel-wg
+ip link delete flannel-wg-v6
 rm -rf /var/lib/cni/
 iptables-save | grep -v KUBE- | grep -v CNI- | grep -v flannel | iptables-restore
 ip6tables-save | grep -v KUBE- | grep -v CNI- | grep -v flannel | ip6tables-restore

package/rpm/install.sh

@@ -566,6 +566,8 @@ done
 ip link delete cni0
 ip link delete flannel.1
 ip link delete flannel-v6.1
+ip link delete flannel-wg
+ip link delete flannel-wg-v6
 ip link delete kube-ipvs0
 rm -rf /var/lib/cni/
 iptables-save | grep -v KUBE- | grep -v CNI- | grep -v flannel | iptables-restore