smoketest: tunnel: validate if local/remote address matches proper address family
smoketest: tunnel: validate if local/remote address matches proper address family

Certain tunnel types require that the local and remote IP is either both IPv4 or
IPv6, add a check which ensures that an error is throws if this is not the case.

vyos/vyos-1x,vyos/vyos-1x,vyos/vyos-1x,vyos/vyos-1x