s390x: Add stsi 3.2.2 tests

Subcode 3.2.2 is handled by KVM/QEMU and should therefore be tested
a bit more thoroughly.

In this test we set a custom name and uuid through the QEMU command
line. Both parameters will be passed to the guest on a stsi subcode
3.2.2 call and will then be checked.

We also compare the configured cpu numbers against the smp reported
numbers and if the reserved + configured add up to the total number
reported.

Signed-off-by: Janosch Frank <frankja@linux.ibm.com>
Reviewed-by: Cornelia Huck <cohuck@redhat.com>
Message-Id: <20200331071456.3302-1-frankja@linux.ibm.com>
Signed-off-by: David Hildenbrand <david@redhat.com>