We have Fedora 32 nodes now, retire the Fedora 31 testing and replace
with 32.
Docker isn't supported on Fedora 32. There's a problem with cgroups
v2 and you can read all about it at [1]. Drop the install test.
Haskell upstream has dropped F32 from the COPR repo as it is now
packaged; a new package with the correct dependencies has been pushed
but isn't available yet (see the inline github issue), so workaround
the missing package.
[1] https://github.com/docker/for-linux/issues/955
Change-Id: I025613bee8c0a8513afa90331431d2c18b616464
c5c9f7d862