test: create scenario where Cactus denies CPU_OFF request

The test is expected to crash since SPMD panics upon receiving
the DENIED status for the PSCI framework response message.

Change-Id: I0c85fd78cd26c7db427bfc68eeed40e8a687664b
Signed-off-by: Madhukar Pappireddy <madhukar.pappireddy@arm.com>
7 files changed