x2 hosts are a lot more special than we thought they'd be when we first set them up.
Like parsercache, these hosts have special config on their role and we should create an specific role for them (like parsercache has).
This role should make these hosts to have by default:
- sync_binlog = 0
- innodb_flush_log_at_trx_commit = 0
- binlog = STATEMENT
@tstarling would you have time to take a first look into this and put up an initial patch?