... `writes_coordinator_outside_replica_set`' from Juliusz Stasiewicz
With this change, coordinator prefers himself as the "counter leader", so if
another endpoint is chosen as the leader, we know that coordinator was not a
member of replica set. With this guarantee we can increment
`scylla_storage_proxy_coordinator_writes_coordinator_outside_replica_set` metric
after electing different leader (that metric used to neglect the counter
updates).
The motivation for this change is to have more reliable way of counting
non-token-aware queries.
Fixes#4337Closes#8282
* github.com:scylladb/scylla:
storage_proxy: Include counter writes in `writes_coordinator_outside_replica_set`
counters: Favor coordinator as leader
7961a28835