define replication filter rule for each slave thread.

[MiskoLee Lee]

since MySQL 5.7 supports dynamic change replication filter rule, details on https://dev.mysql.com/doc/refman/5.7/en/change-replication-filter.html.

But looks like rules will be applied to all slaves if we have a user story:

1. Defined a slave to sync Table A, Table B.
2. Defined a slave to sync Table C, Table D.

all slaves need to receive all table events and filtering on the slave side in current. So, I am looking at how can we filter tables on the server side, it's very well to save network traffics.