database: Log compaction strategy setting on shard 0 only
database: Log compaction strategy setting on shard 0 only

The compaction strategy is per node not per shard. Do not duplicate the
same log on all shards.

Message-Id: <074c5950319a54c5decdba70e405740fffc2e3c9@scylladb.com>

duarten/scylla,scylladb/scylla,duarten/scylla,scylladb/scylla,avikivity/scylla,scylladb/scylla,scylladb/scylla,avikivity/scylla,duarten/scylla,avikivity/scylla