kvm-unit-tests: VMX: Add instruction intercepts test cases

Add test cases for instruction intercepts. Test exit inromations for
CPUID/HLT/INVLPG/MWAIT/RDPMC/RDTSC/MONITOR/PAUSE/WBINVD/INVD.

Signed-off-by: Arthur Chunqi Li <yzt356@gmail.com>