[VOTE] Accept dubbogo/hessian2 donation

[Huxing Zhang]

Hi All,

This is a formal vote to bring dubbogo/hessian2[1], which is depended
by dubbo-go, to Apache Dubbo project.

Please vote:

[ ] +1 Accept
[ ] +0 No Opinion
[ ] -1 Reject because...

[1] https://github.com/dubbogo/hessian2

-- 
Best Regards！
Huxing