Should we track seconardy servers separately from the primary instance?

[toddself]

@restrry posed this on the pr for multiple http servers and it likely bears a quick thought.

I originally put the primary server in the map and was calling it servers, but thought we might need to easily gain access to the primary one.

perhaps we don't?

[elasticmachine]

Pinging @elastic/kibana-platform

[mshustov]

I think it's unnecessary change anything until we have a real reason to do so, feel free to ignore my comment in that PR

[mshustov]

close as original implementation was reverted in #42333