move testTaxLineTradeCondition.py to ERP5Legacy/tests/testLegacyTradeCondition.py and make ERP5Legacy/tests/testLegacyTradeCondition.py for using legacy simulation hierarchy.

git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@33433 20353a03-c40f-0410-a6d1-a30d3c3de9de