test: adapted the expected_logs to the new values of walltime

test/conftest.py

test/expected_log/broker-bpNRJ-2machines-para_homo_jobs.csv

...ted_log/broker_binpackingNRJ-2machines-para_homo_jobs.csv

test/expected_log/cocktail_user_model-2machines_jobs.csv

...xpected_log/dicho_intersubmission_time-2machines_jobs.csv

test/expected_log/routine_greedy-2machines_jobs.csv

test/test_zexpected_output.py