Add test config to libminijail_test, libminijail_unittest_gtest and syscall_filter_unittest_gtest

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: Ia1d3790cf5f1cb7a57932e43cf6ccdbe23fc5e3b
2 files changed