Adding convergence prototype scenarios tests to run against actual
heat code base.
These tests are not modified and should test the sanity of covergence
implementation.
Change-Id: I69373a423da85f23597623457a7a7f1d5c2b0d2a
Implements: blueprint convergence-simulator-tests
Co-Authored-By: Anant Patil <anant.patil@hp.com>