Print all docker images in gate

TrivialFix

Change-Id: I65ba1828fccee52194eb2b76c4055c922236d97b

tools/deploy_aio.sh

@@ -47,6 +47,7 @@ function check_failure {
     # Command failures after this point can be expected
     set +o errexit
 
+    docker images
     docker ps -a
     failed_containers=$(docker ps -a --format "{{.Names}}" --filter status=exited)