Add sed commands for database import

The production database dump contains various entries which try to set definer
of views to be an account which does not exist in the development VM. This will
cause errors when you try to import it in development:

```
ERROR 1227 (42000) at line 7199: Access denied; you need (at least one of) the SUPER privilege(s) for this operation
```

The offending lines look like:

```
/*!50001 CREATE ALGORITHM=UNDEFINED */
/*!50013 DEFINER=`tariff_temporal`@`%` SQL SECURITY DEFINER */
```

We can safely remove those in development.

Usage:

```
sed -f path/to/prod2dev.sed production-dump.sql > development-dump.sql
```