Properly place undercloud hosts record upgrade task

Undercloud record for hosts has to be in all the nodes that fetch
images from it. Proper location for this code is where we set up
podman. If it's only in ContainerImagesPrepare it runs on the
Controller role only.

Closes-Bug: #1871243

Change-Id: Id081f049bca6c961ad2ff649ac357cea8d552739

deployment/container-image-prepare/container-image-prepare-baremetal-ansible.j2.yaml

@@ -132,12 +132,3 @@ outputs:
 {% endfor %}
           when:
             - (step | int) == 1
-      upgrade_tasks:
-        - name: Make sure the Undercloud hostname is included in /etc/hosts
-          when:
-            - step|int == 1
-            - undercloud_hosts_entries is defined
-          lineinfile:
-            dest: /etc/hosts
-            line: "{{ '{{ ' }} undercloud_hosts_entries | join('') {{ ' }}' }}"
-            state: present

deployment/podman/podman-baremetal-ansible.yaml

@@ -160,6 +160,13 @@ outputs:
           when:
             - step|int == 1
           block:
+            - name: Make sure the Undercloud hostname is included in /etc/hosts
+              when:
+                - undercloud_hosts_entries is defined
+              lineinfile:
+                dest: /etc/hosts
+                line: "{{ undercloud_hosts_entries | join('') }}"
+                state: present
             - name: Set container_registry_insecure_registries fact.
               set_fact:
                 container_registry_insecure_registries: