Ensure log lines confirm to utf-8 standard
Ensure log lines confirm to utf-8 standard

We've come across cases when certain characters break Beaver transmitting log lines. This PR ensures all log lines correctly conform to UTF-8 when they're formatted for transmission.
python-beaver/python-beaver,rajmarndi/python-beaver,python-beaver/python-beaver,josegonzalez/python-beaver,timstoop/python-beaver,josegonzalez/python-beaver,timstoop/python-beaver,jlambert121/beaver,rajmarndi/python-beaver,jlambert121/beaver