Add flag/option to skip hostName verification

[tyrannasaurusbanks]

Hi @mdevan , I stumbled across your blog post in the aftermath of an incident where some of our internal TLS assets expired. I'm planning on using it to build a small tool to deploy internally to check all our kubernetes clusters and alert if any have assets expiring soon.

I thought I'd PR back the first functionality I added: a flag to skip host verification.

Thanks for blogging and ultimately saving me some time!