Add pc-linux toolchain "cross-compile" to CI

[skliper]

Is your feature request related to a problem? Please describe. Current CI uses SIMULATION=native for all builds

Describe the solution you'd like Add one non-simulation build, consider matrix model as used in osal

Describe alternatives you've considered None

Additional context nasa/cFE#629 - failure that wasn't caught

Requester Info Jacob Hageman - NASA/GSFC