Summary: Ref T10923. When regenerating the URI index for a repository, index every URI. - Also, make the index slightly stricter (domain + path instead of just path). Excluding the domain made more sense when we were generating only first-party URIs. - Make the index smarter about `/diffusion/123/` URIs. - Show normalized URIs in `diffusion.repository.search` results. Test Plan: - Ran migration. - Verified sensible-looking results in database. - Searched for a repository URI by first-party clone URI. - Searched for a repository URI by mirror URI. - Used `diffusion.repository.search` to get information about repository URIs. Reviewers: chad Reviewed By: chad Maniphest Tasks: T10923 Differential Revision: https://secure.phabricator.com/D15876