[FIX] test_expression: assertion was too sensitive to exact parameters
[FIX] test_expression: assertion was too sensitive to exact parameters

Now that res.partner.child_ids has an extra domain
attribute the exact number of parameters of queries
using `child_ids` in the WHERE clause is different.

akretion/openerp-server,akretion/openerp-server,akretion/openerp-server