minor - brownie test stops on some some naming conflicts

[martinkrung]

Run

brownie test

Breacks with error, massage see below

Workaround

Just run sub-test directly

brownie test tests/unitary
brownie test tests/integration

Recommendation

Just remove brownie test from README.txt

Errors

======================ERRORS ===================

tests/unitary/FeeDistribution/test_fee_distribution.py
imported module 'test_fee_distribution' has this file attribute:
/curve/curve-dao-contracts_py3.8_sqlite/tests/fork/Burners/test_fee_distribution.py
which is not the same as the test file we want to collect:
/curve/curve-dao-contracts_py3.8_sqlite/tests/unitary/FeeDistribution/test_fee_distribution.py
HINT: remove pycache / .pyc files and/or use a unique basename for your test file modules