FIXED_RANGE_V6 not set to sane value in neutron_plugins/services/l3

[Jay Faulkner]

http://logs.openstack.org/16/334816/21/check/gate-tempest-dsvm-ironic-ipa-wholedisk-agent_ipmitool-coreos-src-ubuntu-xenial/95f5e9e/logs/devstacklog.txt.gz#_2016-11-18_19_22_51_984

The awk statement here: https://github.com/openstack-dev/devstack/blob/master/lib/neutron_plugins/services/l3#L76 is only returning "64", leading to an invalid create command.

2016-11-18 19:40:58.306 | +++ lib/neutron_plugins/services/l3:_neutron_create_private_subnet_v6:306 : openstack --os-cloud devstack-admin --os-region RegionOne subnet create --project ded28149997744f2b64a840e53acb288 --ip-version 6 --subnet-range 64 --ipv6-ra-mode slaac --ipv6-address-mode slaac --network ac990965-9a51-400a-a41d-043362176698 ipv6-private-subnet

This is a bad request, as 64 is not a valid IPv6 subnet. Fix will be to fix the awk statement linked.

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/399762
Committed: https://git.openstack.org/cgit/openstack-dev/devstack/commit/?id=a5afa7d81ad380eeb91f7c58dd07facb214b347b
Submitter: Jenkins
Branch: master

commit a5afa7d81ad380eeb91f7c58dd07facb214b347b
Author: Clark Boylan <email address hidden>
Date: Fri Nov 18 12:32:19 2016 -0800

    Fix default ipv6 fixed range var

    The intent was to make any ipv6 safe addr range bigger than a /64 a /64
    when setting the fixed range. Unfortunately the awk only emited the mask
    and not the addr. Fix this by sprinkling the address back in.

    Fixes-Bug: 1643055
    Change-Id: I526d4c748fd404ecb3c77afcbb056aa95090c409