Fixes to make rpl_user test pass in pushbuild.

--source include/master-slave.inc

reset master;

#

# remove all users will be used in the test

#

connection master;

set sql_log_bin=0;

delete from mysql.user where Host='fakehost';

sync_slave_with_master;

set sql_log_bin=1;

connection slave;

set sql_log_bin=0;

delete from mysql.user where Host='fakehost';

set sql_log_bin=1;

#

# Test create user