Error in unit tests with v0.3.0

[mbkumar]

I am seeing the below errors when running the units.

======================================================================
ERROR: test_communicate_micro_output (test_adaptivity_parallel.TestGlobalAdaptivity)
Test functionality to communicate micro output from active sims to their associated inactive sims, for a global adaptivity setting.
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/Users/bharatmedasani/Software/reviews/micro-manager-0.3.0/tests/unit/test_adaptivity_parallel.py", line 115, in test_communicate_micro_output
    adaptivity_controller.communicate_micro_output(is_sim_active, sim_is_associated_to, sim_output)
  File "/Users/bharatmedasani/miniconda3/envs/tmp38/lib/python3.8/site-packages/micro_manager/adaptivity/global_adaptivity.py", line 153, in communicate_micro_output
    recv_reqs = self._p2p_comm(assoc_active_ids, micro_output)
  File "/Users/bharatmedasani/miniconda3/envs/tmp38/lib/python3.8/site-packages/micro_manager/adaptivity/global_adaptivity.py", line 316, in _p2p_comm
    req = self._comm.irecv(bufsize, source=recv_rank, tag=tag)
  File "mpi4py/MPI/Comm.pyx", line 1502, in mpi4py.MPI.Comm.irecv
  File "mpi4py/MPI/msgpickle.pxi", line 417, in mpi4py.MPI.PyMPI_irecv
mpi4py.MPI.Exception: MPI_ERR_RANK: invalid rank

======================================================================
ERROR: test_update_inactive_sims_global_adaptivity (test_adaptivity_parallel.TestGlobalAdaptivity)
Test functionality to update inactive simulations in a particular setting, for a global adaptivity setting.
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/Users/bharatmedasani/Software/reviews/micro-manager-0.3.0/tests/unit/test_adaptivity_parallel.py", line 70, in test_update_inactive_sims_global_adaptivity
    is_sim_active, sim_is_associated_to = adaptivity_controller._update_inactive_sims(
  File "/Users/bharatmedasani/miniconda3/envs/tmp38/lib/python3.8/site-packages/micro_manager/adaptivity/global_adaptivity.py", line 230, in _update_inactive_sims
    recv_reqs = self._p2p_comm(list(to_be_activated_map.keys()), sim_states_and_global_ids)
  File "/Users/bharatmedasani/miniconda3/envs/tmp38/lib/python3.8/site-packages/micro_manager/adaptivity/global_adaptivity.py", line 316, in _p2p_comm
    req = self._comm.irecv(bufsize, source=recv_rank, tag=tag)
  File "mpi4py/MPI/Comm.pyx", line 1502, in mpi4py.MPI.Comm.irecv
  File "mpi4py/MPI/msgpickle.pxi", line 417, in mpi4py.MPI.PyMPI_irecv
mpi4py.MPI.Exception: MPI_ERR_RANK: invalid rank

----------------------------------------------------------------------