Enabling traces for dragonfly custom model, turning off synthetic traffic as it runs out of memory on jenkins due to large network size

Need to cut down synthetic dragonfly network size, currently running out of memory on jenkins server (commenting the test for now)

Adding first pass of dragonfly custom model: routings (adaptive, progressive adaptive, minimal, non-minimal) should be functional with DF traces, need to update for making optimistic mode functional

Adding sampling examples in synthetic workload test program, fixing a reverse handler bug in synthetic workload test

Torus model revision: adding bubble flow control for deadlock prevention and updated congestion control

Changing the hash function to bj_hash_little2, more additions to the MPI Sim layer operation matching