[test/Object, obj2yaml] - Move test cases from test/Object and cleanup.
test/Object is not correct place to have tests that check obj2yaml
functionality, because we have test/tools/obj2yaml folder for that.
In this patch I merged a few test cases with their YAMLs from Inputs
folder, converted one of binary inputs and moved them to
There are still another tests that might need the same, so it is initial step.
Differential revision: https://reviews.llvm.org/D64555