dmidecode is missing from host

[gboutry]

Bug Description

A sunbeam user encountered this issue while trying to deploy using this operator. Dmidecode is not present by default in his environment.

To Reproduce

1. juju add-machine --base [email protected]
2. juju wait-for machine 0 --query='status=="started"'
3. juju ssh 0 sudo apt remove --yes dmidecode
4. juju deploy k8s --channel 1.31/beta --to 0
5. juju wait-for unit k8s/0 --query='workload-status=="error" && agent-status=="idle"'

Environment

1.31/beta on a 22.04 host, charm deployed by sunbeam.

Relevant log output

unit-k8s-0: 10:21:51 INFO unit.k8s/0.juju-log Running legacy hooks/install.
unit-k8s-0: 10:21:51 ERROR unit.k8s/0.juju-log Uncaught exception while in charm code:
Traceback (most recent call last):
  File "/var/lib/juju/agents/unit-k8s-0/charm/./src/charm.py", line 996, in <module>
    ops.main(K8sCharm)
  File "/var/lib/juju/agents/unit-k8s-0/charm/venv/ops/__init__.py", line 343, in __call__
    return _main.main(charm_class=charm_class, use_juju_for_storage=use_juju_for_storage)
  File "/var/lib/juju/agents/unit-k8s-0/charm/venv/ops/_main.py", line 541, in main
    manager = _Manager(charm_class, use_juju_for_storage=use_juju_for_storage)
  File "/var/lib/juju/agents/unit-k8s-0/charm/venv/ops/_main.py", line 424, in __init__
    self.charm = self._make_charm(self.framework, self.dispatcher)
  File "/var/lib/juju/agents/unit-k8s-0/charm/venv/ops/_main.py", line 427, in _make_charm
    charm = self._charm_class(framework)
  File "/var/lib/juju/agents/unit-k8s-0/charm/./src/charm.py", line 155, in __init__
    self.distributor = TokenDistributor(self, self.get_node_name(), self.api_manager)
  File "/var/lib/juju/agents/unit-k8s-0/charm/./src/charm.py", line 283, in get_node_name
    if self.xcp.name == "aws":
  File "/usr/lib/python3.10/functools.py", line 981, in __get__
    val = self.func(instance)
  File "/var/lib/juju/agents/unit-k8s-0/charm/venv/charms/interface_external_cloud_provider.py", line 76, in name
    vendor = self._vendor
  File "/usr/lib/python3.10/functools.py", line 981, in __get__
    val = self.func(instance)
  File "/var/lib/juju/agents/unit-k8s-0/charm/venv/charms/interface_external_cloud_provider.py", line 67, in _vendor
    vendor = check_output(["dmidecode", "-s", "system-manufacturer"])
  File "/usr/lib/python3.10/subprocess.py", line 421, in check_output
    return run(*popenargs, stdout=PIPE, timeout=timeout, check=True,
  File "/usr/lib/python3.10/subprocess.py", line 503, in run
    with Popen(*popenargs, **kwargs) as process:
  File "/usr/lib/python3.10/subprocess.py", line 971, in __init__
    self._execute_child(args, executable, preexec_fn, close_fds,
  File "/usr/lib/python3.10/subprocess.py", line 1863, in _execute_child
    raise child_exception_type(errno_num, err_msg, err_filename)
FileNotFoundError: [Errno 2] No such file or directory: 'dmidecode'
unit-k8s-0: 10:21:51 ERROR juju.worker.uniter.operation hook "install" (via hook dispatching script: dispatch) failed: exit status 1

Additional context

User reports physical machine is installed with jammy minimal

[addyess]

yes, dmidecode is used by the charm to determine which cloud vendor the machine is hosted on (openstack, aws, azure...etc) I suppose we can improve the charm to not rely on it, or to ensure its installed with apt