exec /usr/bin/dumb-init: exec format error

[Rafael]

**Bug Report**

What happened:
  After executing
   $ kolla-ansible -i ./multinode deploy

  the deployment process fails, the container fluentd keeps restarting:

    root@node01:/home/ansible# docker ps
    CONTAINER ID IMAGE COMMAND
    CREATED STATUS PORTS NAMES
    33d6c5ecfd79 quay.io/openstack.kolla/fluentd:master-ubuntu-jammy "dumb-init --single-…"
    2 minutes ago Restarting (1) 30 seconds ago fluentd

    root@node01:/home/ansible# docker logs -f 33d6c5ecfd79
    exec /usr/bin/dumb-init: exec format error
    exec /usr/bin/dumb-init: exec format error
    exec /usr/bin/dumb-init: exec format error

What you expected to happen:
  Successful deployment

How to reproduce it (minimal and precise):
  $ kolla-ansible -i ./multinode bootstrap-servers
  $ kolla-ansible -i ./multinode prechecks
  $ kolla-ansible -i ./multinode deploy

**Environment**:
* OS (e.g. from /etc/os-release): 22.04.1 LTS (Jammy Jellyfish)
* Kernel (e.g. `uname -a`): Linux node01 5.15.0-1012-raspi #14-Ubuntu SMP PREEMPT Fri Jun 24 13:10:28 UTC 2022 aarch64 aarch64 aarch64 GNU/Linux
* Docker version if applicable (e.g. `docker version`): 20.10.21

[Marcin Juszkiewicz (hrw)]

You need to use "openstack_tag_suffix='-aarch64'" if you use official images.

We do not make multiarch images and default ones are x86-64 only.

[Marcin Juszkiewicz (hrw)]

Look at docker hub: https://hub.docker.com/r/kolla/nova-libvirt/tags