Uploads two reports to Buildkite, one from cargo-cov and one from lcov via grcov. The lcov one is busted on linux and is what we need to bring codecov.io back up again. It works great on macos if you wanted to generate them locally and prefer lcov HTML reports.
* Also comment out non-coverage build to speed things up.
* remove trailing whitespace in ci/audit.sh
* code review fixups
* rename GOSSIP_PORT_RANGE => SOLANA_PORT_RANGE
* remove out-of-date TODO in localnet-sanity.sh
* remove features=test and code that was using it (localhost prohibitions in
crdt) added TODO in crdt.rs, maybe we should boot localhost in production
networks?
* boot tvu_window from NodeInfo: instead, send repair requests from the repair
socket (to gossip on peer) and answer repair requests via the sockaddr
from the repair request
* remove various unused pub functions
* banish SocketAddr parse().unwrap() to a macro that can also accept simpler stuff
