Try utf-8 and fallback to latin1 for 2/3 collective
Try utf-8 and fallback to latin1 for 2/3 collective

datetime objects are latin1 encoded from python2.

Not an issue for pure python3 or python2 collectives, but
mitigating problems in the mixed environment

jjohnson42/confluent,jjohnson42/confluent,xcat2/confluent,xcat2/confluent,jjohnson42/confluent,jjohnson42/confluent,xcat2/confluent,xcat2/confluent,xcat2/confluent,jjohnson42/confluent