Testcase 04
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This test verifies that we can't offline ALL of the CPUs in the system.
We do this by onlining all the cpus, then offlining all the cpus and
verifying that an error is returned for the last one.
Algorithm
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Loop until done:
Take a snapshot of what CPUs are on and off initially
Online all the CPUs
Offline al the CPUs
Restore system to initial state