pylint #28796 regression in --generated-members in pylint 0.20 [open]

--generated-members is ignored in 0.20, this was fully working before in 0.19.

How to reproduce:
a = "a"

Then run pylint 0.20 with:
# pylint --generated-members="id" ttest

pylint reports errors about id now, while it shouldn't.

When this is run with 0.19, id is ignored.
done in0.21.2
load left0.000
closed by<not specified>