Build fix: NodeModel.OldValue was renamed to CachedValue
Merge pull request #1584 from Benglin/master

Build fix: NodeModel.OldValue was renamed to CachedValue
Fixed test cases which were using old verification mechanism.

1. Added Dummy Node check for all three tests.
2. Turned on one test case which was marked as inconclusive and added verification to that.
3. Currently all these tests are failing, two of them because of valid reason and one of them because of TestFramework issue. I will talk to Ian and get it fix. Even that one test failing make sense to merge because at least this will check dummy node.