Upload images with --file instead of stdin

This is more likely how people will actually upload their images, but
it also prevents the "osc as a service" feature from working because
stdin isn't proxied (of course). So just convert our uses of "image
create" to use --file instead of stdin.

Change-Id: I7205eb0100ba7406650ed609cf517cba2c8d30aa
diff --git a/functions b/functions
index 01e1d25..f81e8f0 100644
--- a/functions
+++ b/functions
@@ -118,7 +118,7 @@
         useimport="--import"
     fi
 
-    openstack --os-cloud=devstack-admin --os-region-name="$REGION_NAME" image create "$image_name" --public --container-format "$container" --disk-format "$disk" $useimport $properties < "${image}"
+    openstack --os-cloud=devstack-admin --os-region-name="$REGION_NAME" image create "$image_name" --public --container-format "$container" --disk-format "$disk" $useimport $properties --file $(readlink -f "${image}")
 }
 
 # Retrieve an image from a URL and upload into Glance.
@@ -425,10 +425,10 @@
         # kernel for use when uploading the root filesystem.
         local kernel_id="" ramdisk_id="";
         if [ -n "$kernel" ]; then
-            kernel_id=$(openstack --os-cloud=devstack-admin --os-region-name="$REGION_NAME" image create "$image_name-kernel" $(_image_properties_to_arg $img_property) --public --container-format aki --disk-format aki < "$kernel" -f value -c id)
+            kernel_id=$(openstack --os-cloud=devstack-admin --os-region-name="$REGION_NAME" image create "$image_name-kernel" $(_image_properties_to_arg $img_property) --public --container-format aki --disk-format aki --file $(readlink -f "$kernel") -f value -c id)
         fi
         if [ -n "$ramdisk" ]; then
-            ramdisk_id=$(openstack --os-cloud=devstack-admin --os-region-name="$REGION_NAME" image create "$image_name-ramdisk" $(_image_properties_to_arg $img_property) --public --container-format ari --disk-format ari < "$ramdisk" -f value -c id)
+            ramdisk_id=$(openstack --os-cloud=devstack-admin --os-region-name="$REGION_NAME" image create "$image_name-ramdisk" $(_image_properties_to_arg $img_property) --public --container-format ari --disk-format ari --file $(readlink -f "$ramdisk") -f value -c id)
         fi
         _upload_image "${image_name%.img}" ami ami "$image" ${kernel_id:+ kernel_id=$kernel_id} ${ramdisk_id:+ ramdisk_id=$ramdisk_id} $img_property
     fi