Can't run hydra-plutus tests without repl

[ch1bo]

This is more a developer experience problem than a bug. After changing the scripts in hydra-plutus, I want to see the golden tests failing and then recompute the golden files we keep in the repo.

Context & versions

13e596f08514f6c68ba5326c48f25d29a0b977fe

Steps to reproduce

• Try cabal test hydra-plutus because I know it's golden tests
• Try cabal run hydra-plutus because I remember tests are now exes
• Fix my command to cabal run hydra-plutus:exe:tests because cabal tells me to

Actual behavior

• Tests do run, but produce a new scripts/ dir wherever I happen to be and do not use what was checked in reliably (it tricks me into thinking everything is fine, but CI would fail)

Expected behavior

• Tests to run against the scripts that are checked in.
• A single command to do that with cabal, i.e. cabal test hydra-plutus

Workaround

• Use cabal repl hydra-plutus:exe:tests and then run :main in it

[ch1bo]

This got fixed by reverting the hydra-plutus golden tests again to a test suite in #1459 and cabal test would always refer to the right golden files.