MINOR: checks: Support mux protocol definition for tcp and http health checks

It is now possible to force the mux protocol for a tcp-check based health check
using the server keyword "check-proto". If set, this parameter overwrites the
server one.

In the same way, a "proto" parameter has been added for tcp-check and http-check
connect rules. If set, this mux protocol overwrites all others for the current
connection.
2 files changed