Is your feature request related to a problem? Please describe.
OS_printf stub is silent, more helpful when debugging tests to see at minimum the format string

Describe the solution you'd like
Output the format string as a debug messae similar to CFE_EVS_SendEvent

Describe alternatives you've considered
Could put in a hook, but this is general and useful enough to add

Additional context
None

Requester Info
Jacob Hageman - NASA/GSFC