Add method to the internal API to retrieve all the CountryContinentRedirect in the DB
Add method to the internal API to retrieve all the Directory in the DB
Rename get_host_category_url to get_host_category_url_by_id
Add is_active to the Host object as expected from MM1
Move and expand CategoryDirectory

Add mapping from CategoryDirectory to Category and Directory which
required the class definition to be lower in the model
Add method to the internal APi to retrieve all HostCategoryURL present in the DB
Add method to the internal API to retrieve all the locations in the DB
Add method to the internal API to retrieve all NetblockCountry in the DB
Add method to the internal API to retrieve the directories when creating the pickle
Add method to the internal API to retrieve all the DirectoryExclusiveHost in the DB
Add basic environment for the unit-tests
Add first tests for mirrormanager.lib for test_query_directories

This was used to check that the query from MM1 and the new query using
SQLAlchemy were returning the same results