Always use NO_AUTO_VALUE_ON_ZERO

Author: Shlomi Noach

localtests/autoinc-zero-value/create.sql

@@ -0,0 +1,9 @@
+drop table if exists gh_ost_test;
+create table gh_ost_test (
+  id int auto_increment,
+  i int not null,
+  primary key(id)
+) auto_increment=1;
+
+set session sql_mode='NO_AUTO_VALUE_ON_ZERO';
+insert into gh_ost_test values (0, 23);