* commit 'adfdd82b2':
Back out perf regression from get_cross_signing_keys_from_cache. (#6494)
Fix comment
Fix port db script
Newsfile
Fixup tests
Move start up DB checks to main data store.
Pass Database into the data store
Move are_all_users_on_domain checks to main data store.
Change DataStores to accept 'database' param.