Add test case for core and core+production for reusing components

[jordig100]

Add to the test suite some additional positive test case that covers the reuse of components referenced from different build items. Specially with the production spec where each item would end-up referencing components containing models with the same UUID.

I'd suggest to test one single level of components and also several levels of components, being reused at different levels in the components tree.

Se the following example:

Single replicated instance.zip

[jordig100]

Note this is a duplicate of issue #72