lscert | Add support for following redirect from 80/tcp to discover certificate chain

[atc0005]

For example, assume that the destination https-enabled port is 9192/tcp and not 443/tcp. Let's also assume that 80/tcp is open and that the web server issues a redirect to https://FQDN:9192/.

If you use the default port of 443/tcp the cert retrieval attempt will eventually timeout. Without knowing that 9192/tcp is the intended port, lscert will be unable to retrieve the certificate chain.

If a flag were added such as --follow or --location a http GET request could be submitted to 80/tcp and any redirects followed (within reason) to allow retrieval of the certificate chain.