Jenkins has been failing a lot lately due to test timeouts with CockroachDB.
TestMigrateCockroach previously took around 5 minutes, now it takes 2.
Why 103? I couldn't get 100 to work due to an error w/ NOT NULL and PKs.
Change-Id: Iec95d4e25f9d6cd36920e7f43272c486a17fa879
This attempts to add a README.md to help create consistent migrations
that maximize our test coverage and do not include unnecessary
statements.
It also adds a feature to have an `-- OLD DATA --` section as well
as a `-- NEW DATA --` section so that we can fix mistakes made in
previous snapshots (like a row that was forgotten to be added when a
table was created) without editing them going forward.
Change-Id: I28a786f8ef163cae1de1bb08f61af1e1104b0a88