Capture previous command exit code in integration tests cleanup (#2503)

* show previous response code

* log previous response code of shell script command

test/tests/test_fn_update/test_scale_change.sh

@@ -15,6 +15,7 @@ targetMaxScale=6
 targetCpuPercent=60
 
 cleanup() {
+    echo "previous response" $?
     log "Cleaning up..."
     clean_resource_by_id $TEST_ID
 }