Add snp attestation guest test script

Signed-off-by: Zixi Chen <zixchen@redhat.com>

qemu/deps/sev-snp/regular_attestation_workflow.sh

@@ -0,0 +1,14 @@
+#!/bin/bash
+set -e
+# Verify regular attestation workflow on snp guest
+snpguest report attestation-report.bin request-data.txt --random
+snpguest display report attestation-report.bin
+# get cpu model
+cpu_familly_id=$(cat /proc/cpuinfo | grep 'cpu family' | head -1 | cut -d ":" -f 2 | tr -d " ")
+model_id=$(cat /proc/cpuinfo | grep 'model' | head -1 | cut -d ":" -f 2 | tr -d " ")
+dict_cpu=([251]="milan" [2517]="genoa")
+cpu_model=${dict_cpu[${cpu_familly_id}${model_id}]}
+snpguest fetch ca pem ${cpu_model} ./ -e vcek
+snpguest fetch vcek pem ${cpu_model} ./ attestation-report.bin
+snpguest verify certs ./
+snpguest verify attestation ./ attestation-report.bin