Fix need_insert_lock so that it returns false if the protocol version is 2. insert_lock has not been working for V2 protocol anyway, so this is ok.
Fix need_insert_lock so that it returns false if the protocol version
is 2. insert_lock has not been working for V2 protocol anyway, so this
is ok.

treasure-data/prestogres,treasure-data/prestogres,treasure-data/prestogres,treasure-data/prestogres,treasure-data/prestogres,treasure-data/prestogres,treasure-data/prestogres