Merge #10128: Speed Up CuckooCache tests

Summary:
3f098cc Decrease testcase sizes in cuckoocache tests (Jeremy Rubin)

Tree-SHA512: 71a0e171be8d5473c791440aa4353d99b885b926b7284a3a1914c95e0c2c77925d5f3a6f329778cd81931a4e5832a082cb31d82ee8adb433d357d2e2b4f7a9e5

Backport of Core PR10128
https://github.com/bitcoin/bitcoin/pull/10128/files

Test Plan:
make check
ninja check

Reviewers: deadalnix, Fabien, #bitcoin_abc, markblundeberg

Reviewed By: #bitcoin_abc, markblundeberg

Subscribers: markblundeberg

Differential Revision: https://reviews.bitcoinabc.org/D3000