WL#6815 Adapt MySQL Cluster to 5.7

 - ignore the warnings produced by ndbcluster's binlog thread when the
   mysqld is restarted. These warnings are expected.
 - this is an "old new thing" but test has been disabled
 - ref: Bug17258782 MASTER DIDN'T WRITE ... LOG FILE FOR INCIDENT

Author: blaudden

mysql-test/suite/ndb_binlog/t/ndb_binlog_purge.test

@@ -72,6 +72,11 @@ call go_forth_and_make_binlog(40);
 
 #show binary logs;
 
+# Ignore the warning generated by ndbcluster's binlog thread
+# when mysqld is restarted
+--disable_query_log ONCE
+call mtr.add_suppression("mysqld startup An incident event has been written");
+
 --echo Now restart, should re-pickup the expire-log-days
 --echo debug setting from the config file, and perform
 --echo expire-logs action at restart...
@@ -89,4 +94,4 @@ let $mysqld_name=mysqld.1.1;
 
 drop procedure go_forth_and_make_binlog;
 drop table tm;
-drop table tn;
+drop table tn;