cc_mounts: module claims it works on all distros, but config disables it on BSD

This bug was originally filed in Launchpad as [LP: #1992798](https://bugs.launchpad.net/cloud-init/+bug/1992798)

Launchpad details

affected_projects = []

assignee = minagalic

assignee_name = Mina Galić

date_closed = None

date_created = 2022-10-13T13:56:32.453938+00:00

date_fix_committed = None

date_fix_released = None

id = 1992798

importance = medium

is_complete = False

lp_url = https://bugs.launchpad.net/cloud-init/+bug/1992798

milestone = None

owner = minagalic

owner_name = Mina Galić

private = False

status = triaged

submitter = minagalic

submitter_name = Mina Galić

tags = []

duplicates = []

_Launchpad user **Mina Galić(minagalic)** wrote on 2022-10-13T13:56:32.453938+00:00_

https://github.com/canonical/cloud-init/blob/main/cloudinit/config/cc_mounts.py#L83

distros = ["all"]

vs

https://github.com/canonical/cloud-init/blob/main/config/cloud.cfg.tmpl#L95

{% if not is_bsd %}
- disk_setup
- mounts
{% endif %}

Compare cloudinit/config/cc_mounts.py around the distros declaration with config/cloud.cfg.tmpl around the is_bsd condition. Determine the intended BSD support behavior from these two entries, then verify that the module declaration and generated configuration agree and run the relevant cloud-init tests.

Written by the indexing model from the issue text.