More robust testing for storage bootstrap

[birchmd]

#379 introduces a way to bootstrap the standalone engine storage from the relayer database. During development some testing was done using the mainnet and testnet snapshots (see the ignored test from that PR), however this is not appropriate for CI since the DBs involved are very large.

The purpose of this issue is to create a small-ish DB containing transactions and blocks that exercise all the bootstrap functionality. This includes a mix of successful and failed transactions. And since we will know the state after each transaction we can also add asserts into the test to check the transactions are applied correctly.