Update wireguard-install.sh adding `resolvconf` (#3642)

install/wireguard-install.sh

@@ -21,7 +21,7 @@ $STD apt-get install -y git
 msg_ok "Installed Dependencies"
 
 msg_info "Installing WireGuard"
-$STD apt-get install -y wireguard wireguard-tools net-tools iptables
+$STD apt-get install -y wireguard wireguard-tools net-tools iptables resolvconf
 iptables -t nat -A POSTROUTING -o eth0 -j MASQUERADE
 DEBIAN_FRONTEND=noninteractive apt-get -o Dpkg::Options::="--force-confnew" install -y iptables-persistent &>/dev/null
 $STD netfilter-persistent reload