[TP-1132] :recycle: Add assertions to app_and_key_for_tests.py

[moldovan-clarifai]

Why

• app_and_key_for_tests.py requests fail silently

  CLARIFAI_API_BASE:https://api.clarifai.com
  Creating a new app and keys, so the test run is completely isolated from test runs.
  Traceback (most recent call last):
   File "scripts/app_and_key_for_tests.py", line 201, in <module>
     run(arguments=sys.argv[1:])
   File "scripts/app_and_key_for_tests.py", line 183, in run
     raise Exception('--create-workflow takes one argument')
  Exception: --create-workflow takes one argument