Properly normalize ExUnit filters, closes #7390
Properly normalize ExUnit filters, closes #7390

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