main: move messaging service notify to right position
main: move messaging service notify to right position

Commit eb13f659495f28f58fad3b45487ff2c27cedac51 adjusted the start time
of messaging service, but the notify message wasn't moved together.

Signed-off-by: Amos Kong <eb01d8f828a6c9a20be4534e72e049aaf41503df@scylladb.com>
Cc: Pekka Enberg <add4fcd06328a394f0ad91feda7ee057316dc5ed@scylladb.com>
Message-Id: <1073f285189686619bb4870ef1be20f0f24e8532.1511945338.git.eb01d8f828a6c9a20be4534e72e049aaf41503df@scylladb.com>

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