Why:
* The user_is_temp column exists in the user table to allow finding
temporary users when reading from the DB directly.
* This column was added in f283c0e990,
but this was not written to until
6e68107b3a which was several months
later and after a release version was branched.
* As such, we need a maintenance script to populate the user_is_temp
column for wikis that have enabled temporary account creation.
What:
* Add a maintenance script named populateUserIsTemp.php which
populates the user_is_temp column by looking for rows in the
user table that have user_is_temp as 0 and have user_name match
at least one temporary account match pattern. These rows are then
updated to have user_is_temp as 1.
* This script will be added to update.php in a future commit, so that
betawikis can have this run manually.
* Create unit tests and an integration test for this maintenance
script.
Bug: T355181
Change-Id: I6223496d7aee65e3ab207fe86e386b01bef8b388
