So far every test was forced to have its own logic by duplicating
Octavia's scenario test logic (test_traffic.py).
This patch scatters the Octavia's test_traffic logic into tobiko
framework.
It creates several new files in tobiko/tests/scenario/octavia:
expections.py - Octavia's scenarios exceptions.
octavia_base.py - Octavia's BaseTests.
validators.py - Octavia's traffic validators.
waiters.py - Octavia's waiters.
No additional Octavia logic was added.
Change-Id: I7d6d6d7c54bae0ba02f08a187b8b16a4757e46c8
5c11625189