Add Migration test for all the nodes in Dynamo 0.6. The test cases try to open the old nodes and check for the number of "unresolved" nodes(not "deprecated"). If there are more than zero "unresolved" nodes, the test case will fail. Ideally, by the end of this sprint(Qop), all the migration test should pass.

 Note: For those nodes which need to be run on top of Revit, I have put them in to a different location under DynamoRevitTests.