main.create_or_replace fails sporadically in buildbot (timeout)

Test case timeout after 900 seconds

== /run/shm/var_auto_wjF2/2/log/create_or_replace.log == 

#	MDL_INTENTION_EXCLUSIVE	MDL_EXPLICIT	Schema metadata lock	test	

#	MDL_SHARED_READ	MDL_EXPLICIT	Table metadata lock	test	t2

create or replace table t1 select 1 as f1;

select * from information_schema.metadata_lock_info;

THREAD_ID	LOCK_MODE	LOCK_DURATION	LOCK_TYPE	TABLE_SCHEMA	TABLE_NAME

#	MDL_INTENTION_EXCLUSIVE	MDL_EXPLICIT	Global read lock		

#	MDL_SHARED_NO_READ_WRITE	MDL_EXPLICIT	Table metadata lock	test	t1

#	MDL_INTENTION_EXCLUSIVE	MDL_EXPLICIT	Schema metadata lock	test	

#	MDL_SHARED_READ	MDL_EXPLICIT	Table metadata lock	test	t2

drop table t1;

unlock tables;

#

# MDEV-6560

# Assertion `! is_set() ' failed in Diagnostics_area::set_ok_status

#

CREATE TABLE t1 (col_int_nokey INT)  ENGINE=InnoDB;

CREATE OR REPLACE TEMPORARY TABLE tmp LIKE t1;

LOCK TABLE t1 WRITE;

CREATE OR REPLACE TABLE t1 LIKE tmp;

KILL QUERY con_id;