Add test config to netd_benchmark, netd_unit_test and netd_integration_test

Details about test configs changes are tracked in doc
https://docs.google.com/document/d/1EWUjJ7fjy8ge_Nk0YQbFdRp8DSHo3z6GU0R8jLgrAcw/edit#

Bug: 35882476
Test: local test
Change-Id: If856899c8c281a6507b4b336285a7d0788dcea1a