[pytest-dev] [proposal] deprecate magic constant scopes in favour of the node types

[RonnyPfannschmidt]

Hi all,

since quite a while now we have used magic constants for scope names,
while we have something perfectly fitting already at hand - namely the
Node classes we actually use and mean

i believe its a disservice that we use magic strings one has to manually
map while we have very exact names for those already

-- Ronny