Fixing documentation regarding TLS options (#1583)

[mainakae]

Fixing the documentation to recommend using options.ca, options.cer, options.key and options.passphrase instead of options.agentOptions. homologues, to avoid trouble in proxied environments, as commented in #1583

[nylen]

This looks correct to me, and I think it will help address a number of other issues, as you said, #1289, #1490, #1290, #1229, #1236. However, I have not been following request closely for some months, @simov what do you think?

[simov]

I'm for merging it, as it adds additional information instead of replacing parts of the documentation like it was in the previous PR.

[lalitkapoor]

👍

[nylen]

Thanks @mainakae !!

[mainakae]

Great!, Thank you!