Changes to DI func<> tests so they can be reused like previous DI tests

[holytshirt]

The Windsor DI was missing all the new Func<> tests.
I've done the working in the windsor DI to support func<> openrasta/openrasta-castle-windsor@db2431f
And have made the testing in OR shareable with Windsor DI project.

The only "real" code change I had to make was the second commit which changes 2 class to public. If you don't Windsor throws and error

Attempt by method 'Castle.Proxies.Func`1Proxy.Invoke()' to access type 'System.Collections.Generic.IEnumerable`1 failed. at Castle.Proxies.Func`1Proxy.Invoke()

It does not seem to be able to access the method if the classes are not public.

• the code
• If it's a non-trivial piece of code, signing a CLA
• If it breaks, change, fix or add to existing behaviour, updating
  CHANGELOG.md
• [x ] If it's a bug fix, tests in the Tests project, or scenarios in the TestRig.
• On top of HEAD, unless it's a bugfix on a previous version
• VERSION file updated if not creating a pull-request on top of master