The cleans up all remaining hacking violations and updates the test-
requirements to the latest approved version of hacking so we don't
regress on violations again.
Deleted several duplicated test cases (so I didn't have to fix the
hacking violations in them):
* test_secret_create_nones_blank_name_and_valid_content_type
* test_secret_get_defaults_none_as_bit_length
* test_secret_create_defaults_null_name
Change-Id: I21c7af4160c62222af0e54b947e301bc900250e6
John Vrbanac
4fd63b29a1