Index "Closed" and "Unowned" relationships explicitly
Summary: Ref T4365. Two diffs from now, I'm changing the UI a bit to let you search for closed and unowned documents more explcitly. To support this in ElasticSearch and more easily in MySQL search, make these explicit, positive relationships.
Test Plan: bin/search index --all
Reviewers: btrahan
Reviewed By: btrahan
CC: aran
Maniphest Tasks: T4365
Differential Revision: https://secure.phabricator.com/D8122