Add the `uploaded_config` method to the internal API
Add the `uploaded_config` method to the internal API

This method is used when mirrors upload their own pickle file with all
the information about the data they contain.

Devyani-Divs/mirrormanager2,pombredanne/mirrormanager2,pombredanne/mirrormanager2,Devyani-Divs/mirrormanager2,Devyani-Divs/mirrormanager2,Devyani-Divs/mirrormanager2,pombredanne/mirrormanager2,pombredanne/mirrormanager2