[FEATURE]Try to support connecting to broker with SSL.

[ShannonDing]

Try to support connecting to the broker with SSL.
add a new switch to use OpenSSL.

[WoodsCumming]

I would like to contribute this code for reference.WIP.

[ShannonDing]

I would like to contribute this code for reference.WIP.

GJ. I will assign this RIP to you and after it is finished, pls call for a review.
thx.