Creating a replication user (in the `GRANT` statement) without a
password errors out on upcoming 10.x releases.
For example,
```sql
GRANT REPLICATION SLAVE ON *.* TO 'replication'@'%' IDENTIFIED BY '';
```
emits the error `ERROR 1133 (28000): Can't find any matching row in the
user table`.
To resolve this we user the `CREATE` statement to the user.
eg.
```sql
CREATE USER 'replication'@'%' IDENTIFIED BY '';
GRANT REPLICATION SLAVE ON *.* TO 'replication'@'%';
```