Require definition of `CFE_CPU_ID_VALUE`

[skliper]

Is your feature request related to a problem? Please describe.
CPU_ID should be explicitly defined, defaulted here:

cFE/cmake/target/src/target_config.c

Lines 48 to 50 in e80aae9

	#ifndef CFE_CPU_ID_VALUE
	#define CFE_CPU_ID_VALUE 0
	#endif

Describe the solution you'd like
Remove default

Describe alternatives you've considered
None

Additional context
From CFS-40 code review

Requester Info
Jacob Hageman - NASA/GSFC