[Hafnium] Hafnium CI runs Hpervisor+SPMC FVP tests

Hi,

Note we now have two jenkins jobs started on patch submission: The regular Hafnium builder running unit tests, hypervisor test suite on qemu, static checks and checkpatch. A new job running the test_spmc.sh script on FVP, corresponding to the Hypervisor+SPMC configuration with a single and multiple partitions.

This has been a long road, thanks to everyone involved from multiple teams.

Both test results are reported to the gerrit code review. It remains to fix the Verified+1 vote, based on the two above results. Hope to improve it soonish.

Regards, Olivier.