Disable the url_tls_checker

[lxndrblz]

Hi there,

Thanks for maintaining this repo and for submitting regular updates.

With the latest version I am regularly getting the following error: x509: cannot validate certificate for <IP> because it doesn't contain any IP SANs

For my use case it does not matter if the SAN is correct. Therfore, I am wondering if there is a way to disable this check via an command line option?