scripts/cache-country-mirrors.py is accessing the DB as launchpad_main - excessive permissions/access?

[Steve McInerney]

I'm assuming this is access way and above beyond what is necessary to achieve the task?

Per most of our other scripts; could this one be:
1. given it's own userid to access the DB; this assists with debugging when rouge accesses happen
2. access restricted down to only that required
Perhaps read only on a limited set of table(s) would be fine?

[Curtis Hovey (sinzui)]

I believe thise needs no more than 5 tables, only one being writable.