Make ipv6_address_mode and ipv6_ra_mode for ctlplane subnets configurable

[Harald Jensås]

The undercloud ctlplane subnets are currently hard-coded to 'dhcpv6-stateless' when using IPv6.

Let's make this configurable so that 'dhcpv6-stateful' can be used.

[OpenStack Infra (hudson-openstack)]

Related fix proposed to branch: master
Review: https://review.opendev.org/687920

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.opendev.org/687921

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.opendev.org/687920
Committed: https://git.openstack.org/cgit/openstack/python-tripleoclient/commit/?id=d5e3726999347c4cab1b992fb35720701566ff6d
Submitter: Zuul
Branch: master

commit d5e3726999347c4cab1b992fb35720701566ff6d
Author: Harald Jensås <email address hidden>
Date: Thu Oct 10 15:31:29 2019 +0200

    Add option to control IPv6 address mode

    Add option ipv6_address_mode in undercloud.conf to control
    the address mode, dhcpv6-steteful or dhcpv6-steteless, for
    IPv6 provisioning network.

    Related-Bug: #1847606
    Change-Id: I7de5f5487065d20068229e0d34102be6119fbeef

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.opendev.org/687921
Committed: https://git.openstack.org/cgit/openstack/tripleo-heat-templates/commit/?id=4befee5f2239bfb3fc6bed5517e64ba5baa65970
Submitter: Zuul
Branch: master

commit 4befee5f2239bfb3fc6bed5517e64ba5baa65970
Author: Harald Jensås <email address hidden>
Date: Thu Oct 10 16:06:26 2019 +0200

    Use parameter for ipv6 address mode

    Use the parameter UndercloudCtlplaneIPv6AddressMode
    to control ipv6 address mode for the provisioning
    network instead of hard-codeing to dhcpv6-stateless.

    Change-Id: I549f930853539a7cd665a00d7ec3fd1705f819fb
    Closes-Bug: #1847606
    Depends-On: I7de5f5487065d20068229e0d34102be6119fbeef

[OpenStack Infra (hudson-openstack)]

This issue was fixed in the openstack/tripleo-heat-templates 11.3.0 release.