Misc changes to image-sync

Sync noble images by default now 24.04 LTS is releases.

Name the cloud 'microstack' rather than the older name used
in Charmed OpenStack.

Change-Id: Ie9fd3b3ade7c8b32613fbf3e14a74409f192ca71

charms/openstack-images-sync-k8s/charmcraft.yaml

@@ -34,12 +34,12 @@ config:
         The architectures to sync images for. Space delimited list of architectures.
       type: string
     release:
-      default: focal jammy
+      default: focal jammy noble
       description: |
         The releases to sync images for. Space delimited list of releases.
       type: string
     cloud-name:
-      default: simplestreams-glance-sync
+      default: microstack
       description: |
         The name of the cloud to sync images for.
       type: string

charms/openstack-images-sync-k8s/tests/unit/test_charm.py

@@ -98,7 +98,7 @@ class TestOISOperatorCharm(test_utils.CharmTestCase):
             self.harness.charm.service_name,
             "/etc/apache2/sites-enabled/http-sync.conf",
         )
-        expect_entries = """cloud_name: simplestreams-glance-sync
+        expect_entries = """cloud_name: microstack
 frequency: 3600
 mirrors:
 - content_id: '%(region)s' # Content ID choice
@@ -106,7 +106,7 @@ mirrors:
   hypervisor_mapping: false
   image_conversion: false
   item_filters:
-  - release~(focal|jammy)
+  - release~(focal|jammy|noble)
   - arch~(amd64)
   - ftype~(disk1.img|disk.img)
   keep_items: false