Moved Octavia image upload and CirrOS image identification to Ansible

Change-Id: Ief843310ce57a2d1062d86c54cd7ad6e0f705b68

ci/roles/server_metadata/tasks/main.yml

@@ -1,4 +1,15 @@
 ---
+- name: List all images
+  openstack.cloud.image_info:
+    cloud: "{{ cloud }}"
+  register: images
+
+- name: Identify CirrOS image name
+  set_fact:
+    image_name: "{{ images.images|community.general.json_query(query)|first }}"
+  vars:
+    query: "[?starts_with(name, 'cirros')].name"
+
 - name: Create test server
   openstack.cloud.server:
     cloud: "{{ cloud }}"