Allocate gateway_ip automatically (if not specified) for IPv6 SLAAC subnet during subnet_creation.

[Sridhar Gaddam]

For a SLAAC subnet that is created without specifying the gateway_ip, Neutron currently allocates the gateway_ip at a later stage (i.e., neutron router_interface_add). In order to keep the API consistency between IPv4 and IPv6 it is recommended to allocate the gateway_ip during subnet_create stage itself.

Please refer to the following thread for more details.
https://review.openstack.org/#/c/134530/

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/135872

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/135872
Committed: https://git.openstack.org/cgit/openstack/neutron/commit/?id=66dcb8b935a00e7f7566802d662ebb1f265eab1f
Submitter: Jenkins
Branch: master

commit 66dcb8b935a00e7f7566802d662ebb1f265eab1f
Author: sridhargaddam <email address hidden>
Date: Thu Nov 20 07:39:54 2014 +0000

    Auto allocate gateway_ip even for SLAAC subnets

    For a SLAAC subnet that is created without specifying the gateway_ip,
    Neutron currently allocates (If0c48a7287a828eef4a0f0b0859d4f898d2937bd)
    the gateway_ip at a later stage (i.e., neutron router_interface_add).
    In order to keep the API consistent between IPv4 and IPv6, it is
    recommended to allocate the gateway_ip during subnet_create stage itself.

    Closes-Bug: #1394112
    Change-Id: I965232930502c21b605fe360bb138bb6ea73d2b0

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: stable/juno
Review: https://review.openstack.org/142002

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/142002
Committed: https://git.openstack.org/cgit/openstack/neutron/commit/?id=2f97180833958da7b99b51232561df7201bb3caf
Submitter: Jenkins
Branch: stable/juno

commit 2f97180833958da7b99b51232561df7201bb3caf
Author: sridhargaddam <email address hidden>
Date: Thu Nov 20 07:39:54 2014 +0000

    Auto allocate gateway_ip even for SLAAC subnets

    For a SLAAC subnet that is created without specifying the gateway_ip,
    Neutron currently allocates (If0c48a7287a828eef4a0f0b0859d4f898d2937bd)
    the gateway_ip at a later stage (i.e., neutron router_interface_add).
    In order to keep the API consistent between IPv4 and IPv6, it is
    recommended to allocate the gateway_ip during subnet_create stage itself.

    Closes-Bug: #1402407
    Closes-Bug: #1394112
    Partial-Bug: #1377985
    Change-Id: I965232930502c21b605fe360bb138bb6ea73d2b0
    (cherry picked from commit 66dcb8b935a00e7f7566802d662ebb1f265eab1f)

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/169817

[OpenStack Infra (hudson-openstack)]

Change abandoned by Kyle Mestery (<email address hidden>) on branch: master
Review: https://review.openstack.org/169817
Reason: This review is > 4 weeks without comment, and failed Jenkins the last time it was checked. We are abandoning this for now. Feel free to reactivate the review by pressing the restore button and leaving a 'recheck' comment to get fresh test results.