[Bug 2045828] Fix merged to charm-ceph-iscsi (stable/quincy.2)

[OpenStack Infra]

Reviewed:  https://review.opendev.org/c/openstack/charm-ceph-iscsi/+/903275
Committed: https://opendev.org/openstack/charm-ceph-iscsi/commit/45ba9db2e56786a81c0958397adf1a1030b7b3d8
Submitter: "Zuul (22348)"
Branch:    stable/quincy.2

commit 45ba9db2e56786a81c0958397adf1a1030b7b3d8
Author: Peter Sabaini <peter.sabaini at canonical.com>
Date:   Thu Dec 7 09:04:20 2023 +0100

    Fix: enable GW services once we have config
    
    Closes-Bug: #2045828
    Change-Id: Ia473b2793a60172645713b722cbab80dcdbf93b6

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https://bugs.launchpad.net/bugs/2045828

Title:
  rbd-target-{api,gw}.service doesn't start after a reboot

Status in OpenStack Ceph iSCSI Charm:
  Fix Committed
Status in ceph-iscsi package in Ubuntu:
  New

Bug description:
  ceph-iscsi              quincy/stable   28

  $ apt policy ceph-iscsi
  ceph-iscsi:
    Installed: 3.5-2ubuntu1
    Candidate: 3.5-2ubuntu1
    Version table:
   *** 3.5-2ubuntu1 500
          500 http://archive.ubuntu.com/ubuntu jammy/universe amd64 Packages
          100 /var/lib/dpkg/status

  How to reproduce:
  once the ceph-iscsi charm is deployed with 2 units per the documentation, reboot one of the units.

  # systemctl status rbd-target-gw.service
  ○ rbd-target-gw.service - Setup system to export rbd images through LIO
       Loaded: loaded (/lib/systemd/system/rbd-target-gw.service; disabled; vendor preset: enabled)
       Active: inactive (dead)

  # systemctl status rbd-target-api.service
  ○ rbd-target-api.service - Ceph iscsi target configuration API
       Loaded: loaded (/lib/systemd/system/rbd-target-api.service; disabled; vendor preset: enabled)
       Active: inactive (dead)

  This is probably because the systemd services are disabled.

  # systemctl is-enabled rbd-target-{api,gw}.service
  disabled
  disabled

  A possible workaround is to enable those services by hand.

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