Added NET_1 and NET_2 (TCP / UDP client) automated tests to test suite
Added new functionality: now you can use -P switch to test MUT's peripherals only
Added 'ethernet' peripheral dependency to all NET_x tests
Added EXAMPLE_1 /dev/null redirection host test to automation suite
Added 75% treshhold for test groups progress bars. In -r option
Small testing script refactoring
[NUCLEO_F302R8] Implement analogout_free function

This code was missing + make some typo corrections.