fix unqualified names for container pulls

Author: sjpb

ansible/roles/mysql/tasks/install.yml

@@ -17,6 +17,6 @@
 
 - name: Pull container image
   containers.podman.podman_image:
-    name: "mysql"
+    name: docker.io/library/mysql
     tag: "{{ mysql_tag }}"
   become_user: "{{ mysql_podman_user }}"

ansible/roles/opensearch/tasks/install.yml

@@ -16,7 +16,7 @@
 
 - name: Pull container image
   containers.podman.podman_image:
-    name: "opensearchproject/opensearch"
+    name: docker.io/opensearchproject/opensearch
     tag: "{{ opensearch_version }}"
   become_user: "{{ opensearch_podman_user }}"