test setup v2: add TDD tests

New tests: 0186xx for TDD with the huawei 3276 dongle.
All necessary files to configure and use it have been added.
Existing code has been adapted for the TDD tests.
Only the test setup v2 has been adapted.
The file test_case_list.xml has been changed to add tests
0186xx, but only to work with test setup v2. It won't
work with test setup v1. To be completed if needed.

The tests are similar to FDD tests.
Throughputs for TDD have to be adjusted, the throughputs
of FDD are used for the moment.