MDEV-6495: innodb_flush_log_at_trx_commit=0 as suggestion

for galera vs =2

Updated innodb_flush_log_at_trx_commit value in cnfs as per
recommendation.

debian/additions/my.cnf

@@ -165,7 +165,7 @@ innodb_flush_method	= O_DIRECT
 #query_cache_size=0
 #
 # Optional setting
-#innodb_flush_log_at_trx_commit=2
+#innodb_flush_log_at_trx_commit=0
 
 [mysqldump]
 quick

support-files/rpm/server.cnf

@@ -25,7 +25,7 @@
 #query_cache_size=0
 #
 # Optional setting
-#innodb_flush_log_at_trx_commit=2
+#innodb_flush_log_at_trx_commit=0
 
 # this is only for embedded server
 [embedded]