Implement TLS session resumption via config or add another module to do it

[dlongley]

See: https://nodejs.org/api/tls.html#tls_event_resumesession

We may want to implement TLS session resumption in another module (e.g. bedrock-tls-session-storage-foo) ... it may also be that this sort of thing is best handled at another layer of infrastructure for most setups.

[mattcollier]

+1 to enabling this feature. It is hard to imagine anything other than an in memory store performing better than renegotiating the TLS session.

[dlongley]

Closing since deployment infrastructure typically handles this sort of thing automatically.