ci: retry docker image loa

On CI there's some failure during image load, so try again after
5 seconds...

Signed-off-by: Tiago Castro <tiagolobocastro@gmail.com>

Author: tiagolobocastro

scripts/k8s/load-images-to-kind.sh

@@ -70,4 +70,8 @@ for image in "${images[@]}"; do
   fi
   load_cmd+=" openebs/mayastor-"$image:$IMAGE_TAG
 done
-eval $load_cmd
+if ! eval $load_cmd; then
+    sleep 5
+    log_error "Failed to load images, trying again..."
+    eval $load_cmd
+fi