Comment 10 for bug 1735950

On MAAS 2.3 I still see this issue:

MAAS version: 2.3.0 (6434-gd354690-0ubuntu1~16.04.1

If I block curtin ephemeral environment I can see the competing config provided to debconf_selections:

/curtin/configs/config-001.cfg
debconf_selections: {grub2: grub2 grub2/update_nvram boolean false, maas: 'cloud-init cloud-init/datasources multiselect
    MAAS

    cloud-init cloud-init/maas-metadata-url string http://10.5.0.5/MAAS/metadata/

    cloud-init cloud-init/maas-metadata-credentials string oauth_token_key=W9pshubrZ8StJAw5ss&oauth_consumer_key=r29m8b2F38n5jCEYZX&oauth_token_secret=G7ecZSKG8wsMHckxHCy9aE9Xh76U8bV4

    cloud-init cloud-init/local-cloud-config string apt:\n preserve_sources_list:
    false\n primary:\n - arches: [default]\n uri: http://archive.ubuntu.com/ubuntu\n proxy:
    http://10.5.0.5:8000/\n security:\n - arches: [default]\n uri: http://archive.ubuntu.com/ubuntu\napt_preserve_sources_list:
    true\napt_proxy: http://10.5.0.5:8000/\nmanage_etc_hosts: false\nmanual_cache_clean:
    true\nreporting:\n maas: {consumer_key: <REDACTED>, endpoint: ''http://10.5.0.5/MAAS/metadata/status/hhess8'',\n token_key:
    <REDACTED>, token_secret: <REDACTED>,\n type:
    webhook}\nsystem_info:\n package_mirrors:\n - arches: [i386, amd64]\n failsafe:
    {primary: ''http://archive.ubuntu.com/ubuntu'', security: ''http://security.ubuntu.com/ubuntu''}\n search:\n primary:
    [''http://archive.ubuntu.com/ubuntu'']\n security: [''http://archive.ubuntu.com/ubuntu'']\n -
    arches: [default]\n failsafe: {primary: ''http://ports.ubuntu.com/ubuntu-ports'',
    security: ''http://ports.ubuntu.com/ubuntu-ports''}\n search:\n primary:
    [''http://ports.ubuntu.com/ubuntu-ports'']\n security: [''http://ports.ubuntu.com/ubuntu-ports'']\n

    '}