Adding session whitelists

[snac21]

What would you like to be added:
withlists of hearbeat

Why is this needed:
We need to register the getty server to the Consul registry and establish heartbeat checks between the getty server and Consul. However, we haven't found a way to whitelist specific heartbeat checks.

Whitelisting in OnOpen works for heartbeat checks, but not with TCP SSL: While whitelisting in the OnOpen method allows heartbeat checks to function, enabling TCP SSL causes issues. Since Consul initiates heartbeats without SSL, heartbeat checks fail in this scenario.

Could we add a whitelist feature to address this issue?