Add Object Utility API functional tests

[skliper]

Is your feature request related to a problem? Please describe.
OS_IdentifyObject, OS_ConvertToArrayIndex and OS_ForEachObject missing explicit functional tests

Describe the solution you'd like
Add tests

Describe alternatives you've considered
None.

Additional context
Certification violation

Requester Info
Jacob Hageman - NASA/GSFC

[yammajamma]

I can take this one.

[skliper]

Recommend following the osal/src/tests model. Concept is to demonstrate these functionally work as intended/specified in the API (black box). You can find the API here: https://github.com/nasa/cFS/blob/gh-pages/OSAL_Users_Guide.pdf