Closes gh-20718

Closes gh-20717

This commit is a follow-up of gh-20709 to apply the same consistency
level to the Cassandra reactive health indicator.

Closes gh-20713

Closes gh-20712

Closes gh-20711

* pr/20709:
  Polish "Use LOCAL_ONE when querying system.local"
  Use LOCAL_ONE when querying system.local

Closes gh-20709

See gh-20709

The system keyspace has a replication factor of 1 and is local to each
node; it is therefore recommended to query system.local with a
consistency level of ONE or LOCAL_ONE.

Stronger consistency levels may result in an Unavailable error, but this
does not mean that the node is down.

See gh-20709

See gh-20704

See gh-20704

* pr/20704:
  Fix typos

Closes gh-20704

See gh-20704

This commit restores the port option that was removed in an earlier
milestone. Contact points that do not define a port already are
automatically transformed to include the one configured, with a default
matching Cassandra's default port.

This makes upgrades easier in the case a cluster uses consistent ports
everywhere.

Closes gh-19672

Closes gh-20674

Closes gh-20700

Closes gh-20478

Closes gh-20699

Closes gh-20689

Closes gh-20694

* pr/20681:
  Use jws-algorithm property in ReactiveOAuth2ResourceServerJwkConfiguration

Closes gh-20681

See gh-20681

See gh-20528

Closes gh-20687

Closes gh-20528

Closes gh-20677

Closes gh-20672

See gh-20564

Closes gh-20574

Closes gh-20675

Closes gh-20573