dnsmasq_ip_subnets - IPv6 netmask support

[Harald Jensås]

dnsmasq.conf require a prefix lenght as netmask for IPv6, while the puppet module takes a netmask value, for example: ffff:ffff:ffff:ffff:0000:0000:0000:0000 or ffff:ffff:ffff:ffff::

A full IPv6 subnet example:
[
 {'tag' => 'subnet1',
  'ip_range' => '2001:4888:a03:313a:c0:fe0:0:c200,2001:4888:a03:313a:c0:fe0:0:c2ff',
  'netmask' => 'ffff:ffff:ffff:ffff::',
  'gateway' => '2001:4888:a03:313a:c0:fe0:0:c000'}
]

This resulting dhcp-range in dnsmasq.conf would be:
set:subnet1,2001:4888:a03:313a:c0:fe0:0:c200,2001:4888:a03:313a:c0:fe0:0:c2ff,ffff:ffff:ffff:ffff::,10m

This is invalid, and should use the prefix lenght "64" instead of "ffff:ffff:ffff:ffff:::":
set:subnet1,2001:4888:a03:313a:c0:fe0:0:c200,2001:4888:a03:313a:c0:fe0:0:c2ff,64,10m

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.opendev.org/658883

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.opendev.org/658883
Committed: https://git.openstack.org/cgit/openstack/puppet-ironic/commit/?id=7b6b097d8ac8ebaf3058484ef0c3d5b464fbdc1a
Submitter: Zuul
Branch: master

commit 7b6b097d8ac8ebaf3058484ef0c3d5b464fbdc1a
Author: Harald Jensås <email address hidden>
Date: Mon May 13 19:20:05 2019 +0200

    Convert ipv6 netmask to prefix in dnsmasq.conf

    dnsmasq.conf require a prefix lenght as netmask for IPv6.
    Convert a IPv6 address netmask to prefix.

    Closes-Bug: #1828837
    Change-Id: Idf84ba30eb4eb6d202faa470209f10c9da40e80b

[OpenStack Infra (hudson-openstack)]

This issue was fixed in the openstack/puppet-ironic 15.0.0 release.