Change Details

* Create a paste * Run ./bin/storage upgrade * Check that the mailkey is in the new table correctly

* Create a paste * Check `SELECT * FROM phabricator_paste.paste;` and `SELECT * FROM phabricator_metamta.metamta_mailproperties;` on the database * Run `./bin/storage upgrade` * Check that the mailKeys have been moved to `mailProperties` in the `phabricator_metamta.metamta_mailproperties` table and the `mailKey` column is gone from the `phabricator_paste.paste` table

* Create a paste * Run ./bin/storage upgrade* Check `SELECT * FROM phabricator_paste.paste;` and `SELECT * FROM phabricator_metamta.metamta_mailproperties;` on the database * Check that the mailkey is in the new table correctlyRun `./bin/storage upgrade` * Check that the mailKeys have been moved to `mailProperties` in the `phabricator_metamta.metamta_mailproperties` table and the `mailKey` column is gone from the `phabricator_paste.paste` table