[FS-1459]fix get inventory backward compatibility issue

[Alva8756]

This fix will break the existing API tests for getInventory
If you are agree with this solution, I will work on fix the tests.

[DoctorVin]

I think this is a good start but doesn't go far enough to ensure that this is actually fixed. I'm mostly concerned that there is data in the attributes table that is not well modeled even as an array of ComponentAttributes.

We should bring this up with the wider group as we plot how to fix this in the long term. Thinking more short-term, we should either make sure that ComponentAttributes contains all the data that is in that table or we could log failures to deserialize the attributes of a component and live with the consequences.