According to the docs at https://www.sqlite.org/lang_altertable.html
doing the steps
1. Rename old table
2. Create new table
3. Copy data
4. Drop old table
is incorrect and should be
1. Create new table
2. Copy data
3. Drop old table
4. Rename new into old
Additionally, each step was being run in a different transaction,
which could cause permanent failures if a problem happened during
the migration.
Avoid both of those problems by changing up some previous migrations
that ran in this way. Since they are semantically identical, it's
fine to change up these old migrations. It will help make newer
nodes coming up for the first time more robust.
Change-Id: I43fb004fa1b6cb2fe2554f9920925420da28fb4a
202e65e408