tests: Make coins_tests/updatecoins_simulation_test deterministic
tests: Make coins_tests/updatecoins_simulation_test deterministic

Former-commit-id: c495730ea831a7f5e2defc7a82be710c31eba047
syscoin/syscoin,syscoin/syscoin,syscoin/syscoin,syscoin/syscoin,syscoin/syscoin,syscoin/syscoin,syscoin/syscoin,syscoin/syscoin