Make the entire database be a single dictionary
Make the entire database be a single dictionary

This will make sure that the entire in-memory structure gets
updates all in one go, instead of different parts at different
moments.

Signed-off-by: Patrick Uiterwijk <bd6d5394796bee9cca2245486eb583fd64b70226@redhat.com>

pombredanne/mirrormanager2,pombredanne/mirrormanager2,pombredanne/mirrormanager2,pombredanne/mirrormanager2