tests/test_nanshe_learner.py: Set num_drmaa_cores to 1.
tests/test_nanshe_learner.py: Set num_drmaa_cores to 1.

jakirkham/nanshe,jakirkham/nanshe,DudLab/nanshe,DudLab/nanshe,nanshe-org/nanshe,nanshe-org/nanshe