Correct syntax for insert statement

ID is a numeric ID, so needs default value of 0 in order to trigger the
autoincrement.

install.sql

@@ -1,4 +1,4 @@
 
-insert into users (id, username, password, level) values ('', 'sys_build', '638c0b71a1677183e7840ae6b5b646a2', 0 ) on duplicate key update username='sys_build';
+insert into users (id, username, password, level) values (0, 'sys_build', '638c0b71a1677183e7840ae6b5b646a2', 0 ) on duplicate key update username='sys_build';
 
 insert into sys_config (name, value, description, field_validation_rule, failed_rule_text, editable, deleteable) values ('build_dns_type', 'bind', 'DNS build type', '', '', 1, 1) on duplicate key update value='bind';