Rename scope_to_bad_project() to test_scope_to_bad_project().

In class test_v3_federation.FederatedTokenTests rename method
scope_to_bad_project() to test_scope_to_bad_project() and make
tox launch it automatically.

Change-Id: Id5cbc9843eae122b4e1709ace494bf05e467f116
Closes-Bug: #1294393
Merge "Rename scope_to_bad_project() to test_scope_to_bad_project()."