Convert more tests to use --simulate-with-verilator flag

[gussmith23]

See the changes in:
https://github.com/gussmith23/lakeroad/pull/442/files#diff-0d27fffd632649143df4ef48bc2d3d06b509aa3bd1670befc46db1da81ff5d0c

Simply replicate these changes across all of the integration tests.

Ideally, we should double-check that Verilator is actually running---print out the log, and also create some faulty test cases where Verilator should fail.