Fix upload octavia script

The current version fails with the following error:

```console
$ ./tools/upload_octavia_amphora_image.sh
Running operation 5 with 1 task
  - task 6 on unit-octavia-diskimage-retrofit-0

Waiting for task 6...
Action id 6 failed: unable to find suitable source image
```

Signed-off-by: Nicolas Bock <[email protected]>

openstack/tools/upload_octavia_amphora_image.sh

@@ -1,2 +1,46 @@
-#!/bin/bash -eu
-juju run octavia-diskimage-retrofit/0 retrofit-image
+#!/bin/bash
+
+set -e -u
+
+declare amphora_series=jammy
+
+while (( $# > 0 )); do
+    case $1 in
+        -h|--help)
+            cat <<EOF
+Usage:
+
+-h | --help         This help
+--series SERIES     The series (also the image name) to use as the amphora base
+EOF
+            exit
+            ;;
+        --series)
+            shift
+            amphora_series=$1
+            ;;
+        *)
+            echo "unknown option"
+            exit 1
+            ;;
+    esac
+    shift
+done
+
+basedir=$(realpath $(dirname $0))
+source ${basedir}/../novarc
+
+ID=$(openstack image show --format value --column id ${amphora_series})
+
+TASK=$(juju run octavia-diskimage-retrofit/0 retrofit-image source-image=${ID} --background 2>&1 | grep show-task | sed --regexp-extended 's/^.*task ([0-9]+).*/\1/')
+
+echo -n "Running retrofit"
+while [[ $(juju show-task ${TASK}) =~ running ]]; do
+    echo -n .
+    sleep 5
+done
+echo
+
+ID=$(openstack image list --format json | jq --raw-output '.[] | select(.Name | match("amphora")) | .ID')
+
+openstack image set --tag octavia-amphora ${ID}