If burn_in_tests generates too many tests, it can push evergreen to the limit and cause bad slowdowns. We should put a cap on how many tasks burn_in_tests will generate and fail it we want to generate more tasks than that.

As a server engineer,
I want burn_in_test to limit how many tasks are generated
So that it doesn't cause evergreen to slow down.

AC:

• burn_in_tests should not generate more than 1000 tasks.