_ansible_item_label is not necessarily set (#3646)

contrib/dind/roles/dind-host/tasks/main.yaml

@@ -52,7 +52,7 @@
     {{ distro_raw_setup_done }}  && echo SKIPPED && exit 0
     until [ "$(readlink /proc/1/exe)" = "{{ distro_pid1_exe }}" ] ; do sleep 1; done
     {{ distro_raw_setup }}
-  delegate_to: "{{ item._ansible_item_label }}"
+  delegate_to: "{{ item._ansible_item_label|default(item.item) }}"
   with_items: "{{ containers.results }}"
   register: result
   changed_when: result.stdout.find("SKIPPED") < 0
@@ -62,7 +62,7 @@
     until test -S /var/run/dbus/system_bus_socket; do sleep 1; done
     systemctl disable {{ distro_agetty_svc }}
     systemctl stop {{ distro_agetty_svc }}
-  delegate_to: "{{ item._ansible_item_label }}"
+  delegate_to: "{{ item._ansible_item_label|default(item.item) }}"
   with_items: "{{ containers.results }}"
   changed_when: false
 
@@ -74,13 +74,13 @@
     mv -b /etc/machine-id.new /etc/machine-id
     cmp /etc/machine-id /etc/machine-id~ || true
     systemctl daemon-reload
-  delegate_to: "{{ item._ansible_item_label }}"
+  delegate_to: "{{ item._ansible_item_label|default(item.item) }}"
   with_items: "{{ containers.results }}"
 
 - name: Early hack image install to adapt for DIND
   raw: |
     rm -fv /usr/bin/udevadm /usr/sbin/udevadm
-  delegate_to: "{{ item._ansible_item_label }}"
+  delegate_to: "{{ item._ansible_item_label|default(item.item) }}"
   with_items: "{{ containers.results }}"
   register: result
   changed_when: result.stdout.find("removed") >= 0