In some unit and functional tests self.assertTrue(False) was used
instead of self.fail(), which might be against readability.
Using assertTrue(False) gives the following message on fail:
File "C:\Python361\lib\unittest\case.py", line 678, in assertTrue
raise self.failureException(msg)
AssertionError: False is not true
After replacing assertTrue(False) with fail():
File "C:\Python361\lib\unittest\case.py", line 666, in fail
raise self.failureException(msg)
AssertionError: None
Although the results are the same (both tests failed), the
message 'False is not true' is unnecessary, and can be omitted
from the log by using fail().
Change-Id: I81e21040fd6a2f9713889912fafd2b19bd056b5a