storage_service: Enable is_ready_for_bootstrap in join_token_ring
storage_service: Enable is_ready_for_bootstrap in join_token_ring

The goal is to make sure our schema matches with other nodes in the
cluster.

kjniemi/scylla,kjniemi/scylla,scylladb/scylla,raphaelsc/scylla,scylladb/scylla,avikivity/scylla,kjniemi/scylla,avikivity/scylla,duarten/scylla,duarten/scylla,raphaelsc/scylla,avikivity/scylla,scylladb/scylla,duarten/scylla,raphaelsc/scylla,scylladb/scylla