Is your feature request related to a problem? Please describe.
CFE_SB_ZeroCopyGetPtr does not have a stub in ut_sb_stubs.c causing undefined reference error when building unit tests for an app that uses this call.

Describe the solution you'd like
Add the stub for CFE_SB_ZeroCopyGetPtr with full context tracking.

Describe alternatives you've considered
Create my own locally in the app's unit test, but this does not help everyone.

Requester Info
Alan Gibson, NASA