ci: Test full-emulation cosa run

We should have some CI that verifies this works.

.cci.jenkinsfile

@@ -21,6 +21,10 @@ pod(image: imageName + ":latest", kvm: true, cpu: "${cpuCount}", memory: "${memo
     // Run stage Build FCOS (init, fetch and build)
     cosaBuild(skipKola: 1, cosaDir: "/srv", noForce: true)
 
+    stage("cosa run tests") {
+        shwrap("./ci/run-cosa-self-tests")
+    }
+
     // Run stage Kola QEMU (basic-qemu-scenarios, upgrade and self tests)
     kola(cosaDir: "/srv", addExtTests: ["${env.WORKSPACE}/ci/run-kola-self-tests"])
 

ci/run-cosa-self-tests

@@ -0,0 +1,11 @@
+#!/bin/bash
+# This verifies e.g. `cosa run`.
+set -xeuo pipefail
+tmpdir=$(mktemp -d -p /var/tmp)
+cd ${tmpdir}
+coreos-installer download -a s390x -p qemu -f qcow2.xz --decompress
+cosa run --arch s390x *.qcow2 -x "cat /proc/cpuinfo" > cpuinfo.txt
+grep -F 'IBM/S390' cpuinfo.txt
+cd -
+rm "${tmpdir}" -rf
+echo "ok cosa run full emulation"