Getting TLS to work with Rust client

[MaoZiming]

Hi, I have bene trying to call:

cargo run --example raw -- --pd "[endpoint]" --ca ca.crt --cert tls.cert --key tls.key

But getting: "PD cluster failed to response".
However,

curl -k --cacert ca.crt --cert tls.crt --key tls.key [endpoint/pd/api/v1/members]

will work.
I did try to modify raw.rs to use v1 API, but getting the same output.

[pingyu]

Which commit are you using ?

Please check that whether it is the same issue with #444.

[MaoZiming]

@pingyu Thanks I believe I am on the latest commit