peer count - just count the live ones

[macfarla]

Signed-off-by: Sally MacFarlane [email protected]

This does not address the root cause, but will address the problem of users complaining that the logs report too many peers.

This should mean that the number of peers reported in the logs will be the correct number ie the number of connected peers

Documentation

• [x] I thought about documentation and added the doc-change-required label to this PR if updates are required.

Changelog

• [x] I thought about the changelog and included a changelog update if required.