Add tests for expected number of evals submission and measured times

[priyakasimbeg]

Description

Add CI test that checks if reported times and number of evals are inline with expectations.

For each submission we report:

• total wall clock time
• submission time
• eval time
• logging time
• number of evals

We should add the following tests on at least 1 workload (probably mnist).

1. We should check that submission_time + eval_time + logging time ~ total _wallclock_time.
2. We should check that the number of evals is roughly equal to total_submission_time // eval_period