Reverting back to em-bright-ml for gstlal triggers
source property is now computed based on ML inferences for gstlal triggers
requires p-astro==0.8.1, to be merged after !587 (merged) Minutes from review call (https://git.ligo.org/lscsoft/p-astro/wikis/Review-Telecon-Aug-6,-2019#minutes) and (https://git.ligo.org/lscsoft/p-astro/wikis/Review-Telecon-Aug-27,-2019)
Edited by Deep Chatterjee