problem:
========
mysqltest: In included file "./include/assert.inc":
included from mysql-test/suite/sys_vars/t/rpl_init_slave_func.test at line 69:
Assertion text: '@@global.max_connections = @start_max_connections'
Assertion result: '0'


mysqltest: In included file "./include/assert.inc":
included from mysql-test/suite/sys_vars/t/rpl_init_slave_func.test at line 86:
Assertion text: '@@global.max_connections = @start_max_connections + 1'
Assertion result: '0'

Analysis:
=========
A slave SQL thread sets its Running state to Yes very early in its
initialisation, before the majority of initialisation actions, including
executing the init_slave command, are done. Thus the testcase has a race
condition where the initial replication setup might finish executing later
than the testcase SET GLOBAL init_slave, making the testcase see its effect
where it checks for its absence.

Fix:
===
Include 'sync_slave_sql_with_master.inc' at the beginning of the test to
ensure that slave applier has completed the execution of 'init_slave' command
and proceeded to event application. Replace the apparently needless RESET
MASTER / RESET SLAVE etc.

Patch is based on:
https://github.com/percona/percona-server/pull/1464/commits/b91e2e6f90611aa299c302929fb8b068e8ac0dee
Author: laurynas-biveinis