Update for suggested alignment enforcement pattern (nasa/cFE#1009)

**Is your feature request related to a problem? Please describe.**
See nasa/cFE#1009, inconsistent pattern

**Describe the solution you'd like**
Match suggestion in nasa/cFE#1009, use the "raw" message cmd/tlm types in definition.

**Describe alternatives you've considered**
None

**Additional context**
nasa/cFE#1009

**Requester Info**
Jacob Hageman - NASA/GSFC