Tell pytest to be more selective on directories to watch
Tell pytest to be more selective on directories to watch

By default, it was watching all files in the root, which also included
the entire node_modules tree, which consumed a ton of CPU to watch the
billions of files in there.

fotinakis/sentry,looker/sentry,zenefits/sentry,mvaled/sentry,gencer/sentry,zenefits/sentry,gencer/sentry,beeftornado/sentry,jean/sentry,zenefits/sentry,fotinakis/sentry,gencer/sentry,looker/sentry,mitsuhiko/sentry,JamesMura/sentry,alexm92/sentry,alexm92/sentry,fotinakis/sentry,JackDanger/sentry,BuildingLink/sentry,mvaled/sentry,zenefits/sentry,zenefits/sentry,alexm92/sentry,ifduyue/sentry,jean/sentry,mvaled/sentry,BuildingLink/sentry,jean/sentry,mitsuhiko/sentry,mvaled/sentry,ifduyue/sentry,looker/sentry,JamesMura/sentry,JamesMura/sentry,beeftornado/sentry,ifduyue/sentry,fotinakis/sentry,BuildingLink/sentry,BuildingLink/sentry,JackDanger/sentry,gencer/sentry,JamesMura/sentry,ifduyue/sentry,mvaled/sentry,looker/sentry,JackDanger/sentry,jean/sentry,beeftornado/sentry,BuildingLink/sentry,gencer/sentry,JamesMura/sentry,ifduyue/sentry,looker/sentry,mvaled/sentry,jean/sentry