Check the number of schedulers online in exunit suite, closes #3199
Check the number of schedulers online in exunit suite, closes #3199

kimshrier/elixir,gfvcastro/elixir,ggcampinho/elixir,elixir-lang/elixir,antipax/elixir,ggcampinho/elixir,kelvinst/elixir,beedub/elixir,michalmuskala/elixir,gfvcastro/elixir,pedrosnk/elixir,joshprice/elixir,lexmag/elixir,lexmag/elixir,beedub/elixir,kimshrier/elixir,kelvinst/elixir,pedrosnk/elixir,antipax/elixir