6.1 Disabling certificate checking
In some cases clients are not really interested in host validation of
the peer and whether or not the certificate can be trusted. In these
cases the client can pass cert_verify_hook(cert_accept_any)
,
calling cert_accept_any/5
which accepts any certificate. Note that this will accept literally ANY
certificate presented - including ones which have expired, have been
revoked, and have forged signatures. This is probably not a good idea!