storage_service: reindent token_metadata blocks
storage_service: reindent token_metadata blocks

Many code blocks using with_token_metadata_lock
and get_mutable_token_metadata_ptr now need re-indenting.

Signed-off-by: Benny Halevy <23c997c90eb8537635e9392d48e7af1bf1b2ca22@scylladb.com>

scylladb/scylla,scylladb/scylla,scylladb/scylla,scylladb/scylla