[Bug 280461] nuageinit does not process user details in meta_data file

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=280461

            Bug ID: 280461
           Summary: nuageinit does not process user details in meta_data
                    file
           Product: Base System
           Version: 14.1-RELEASE
          Hardware: Any
                OS: Any
            Status: New
          Severity: Affects Only Me
          Priority: ---
         Component: bin
          Assignee: bugs@FreeBSD.org
          Reporter: tdb@FreeBSD.org

On OpenStack 2024.1 running on Ubuntu, the config drive looks like this:

root@freebsd-14-test:/ # ls -l /dev/iso9660/config-2
crw-r-----  1 root operator 0x5c Jul 26 21:13 /dev/iso9660/config-2
root@freebsd-14-test:/ # mount -t cd9660 /dev/iso9660/config-2 /mnt
root@freebsd-14-test:/ # ls -l /mnt/
total 4
dr-xr-xr-x   4 root wheel 2048 Jul 26 21:13 ec2
dr-xr-xr-x  12 root wheel 2048 Jul 26 21:13 openstack
root@freebsd-14-test:/ # ls -l /mnt/openstack/
total 20
dr-xr-xr-x  2 root wheel 2048 Jul 26 21:13 2012-08-10
dr-xr-xr-x  2 root wheel 2048 Jul 26 21:13 2013-04-04
dr-xr-xr-x  2 root wheel 2048 Jul 26 21:13 2013-10-17
dr-xr-xr-x  2 root wheel 2048 Jul 26 21:13 2015-10-15
dr-xr-xr-x  2 root wheel 2048 Jul 26 21:13 2016-06-30
dr-xr-xr-x  2 root wheel 2048 Jul 26 21:13 2016-10-06
dr-xr-xr-x  2 root wheel 2048 Jul 26 21:13 2017-02-22
dr-xr-xr-x  2 root wheel 2048 Jul 26 21:13 2018-08-27
dr-xr-xr-x  2 root wheel 2048 Jul 26 21:13 2020-10-14
dr-xr-xr-x  2 root wheel 2048 Jul 26 21:13 latest
root@freebsd-14-test:/ # ls -l /mnt/openstack/latest/
total 2
-r--r--r--  1 root wheel 1274 Jul 26 21:13 meta_data.json
-r--r--r--  1 root wheel 1218 Jul 26 21:13 network_data.json
-r--r--r--  1 root wheel    2 Jul 26 21:13 vendor_data.json
-r--r--r--  1 root wheel   14 Jul 26 21:13 vendor_data2.json
root@freebsd-14-test:/ #

Note there is no user_data.json file. The result is that no freebsd user is
created, and no ssh key added. This has broken since this change was added:

https://cgit.freebsd.org/src/commit/libexec/nuageinit/nuageinit?id=48edad2edf6eb7a539e40dad8e1f87e3fa4973fd

Reverting it fixes the problem.

For reference here's the content of meta_data.json (formatted and unique data
removed):

root@freebsd-14-test:/ # jq < /mnt/openstack/latest/meta_data.json
{
  "uuid": "uuid_for_this_instance",
  "admin_pass": "a_generated_password",
  "public_keys": {
    "tdb": "ssh-ed25519 my_key_id tdb@host"
  },
  "keys": [
    {
      "name": "tdb",
      "type": "ssh",
      "data": "ssh-ed25519 my_key_id tdb@host"
    }
  ],
  "hostname": "freebsd-14-test.novalocal",
  "name": "freebsd-14-test",
  "launch_index": 0,
  "availability_zone": "nova",
  "random_seed": "long_random_seed",
  "project_id": "my_project_id",
  "devices": [],
  "dedicated_cpus": []
}
root@freebsd-14-test:/ #

So, for me, the simple fix seems to be to revert that commit.

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