nova-consoleauth and nova-api fail to start for ipv6

[Marios Andreou]

When testing with ipv6 using the patches at https://review.openstack.org/#/c/235423/ there is an error because python memcached cannot parse the v6 address. The fixup is to properly format the memcached v6 addresses and also use a new enough version of python-memcached (for https://bugs.launchpad.net/python-memcached/+bug/1028412 ) .

This was initially reported at https://bugzilla.redhat.com/show_bug.cgi?id=1299265

Fixup incoming

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/270110

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: stable/liberty
Review: https://review.openstack.org/289758

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/270110
Committed: https://git.openstack.org/cgit/openstack/tripleo-heat-templates/commit/?id=c0f8a2aad6e694c14dcdafb6e4d3c450e9a50000
Submitter: Jenkins
Branch: master

commit c0f8a2aad6e694c14dcdafb6e4d3c450e9a50000
Author: marios <email address hidden>
Date: Wed Jan 20 12:34:07 2016 +0200

    Fixup the memcached servers string in nova.conf for v6

    As discussed at https://bugzilla.redhat.com/show_bug.cgi?id=1299265
    when providing a list of IPv6 addresses as the memcache_node_ips
    the resulting nova.conf entry can't be parsed properly.

    This adds a memcache_node_ips_v6 which has the required format like
    inet6:[ADDR1],inet6:[ADDR2],inet6:[ADDR3]

    Closes-Bug: 1536103
    Change-Id: I7f95fa063cbba279c4c2e270841f0a279d2be2f6

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/289758
Committed: https://git.openstack.org/cgit/openstack/tripleo-heat-templates/commit/?id=db265c5d2ef82fa42836bbdd93263c814bea56c5
Submitter: Jenkins
Branch: stable/liberty

commit db265c5d2ef82fa42836bbdd93263c814bea56c5
Author: marios <email address hidden>
Date: Wed Jan 20 12:34:07 2016 +0200

    Fixup the memcached servers string in nova.conf for v6

    As discussed at https://bugzilla.redhat.com/show_bug.cgi?id=1299265
    when providing a list of IPv6 addresses as the memcache_node_ips
    the resulting nova.conf entry can't be parsed properly.

    This adds a memcache_node_ips_v6 which has the required format like
    inet6:[ADDR1],inet6:[ADDR2],inet6:[ADDR3]

    Closes-Bug: 1536103
    Change-Id: I7f95fa063cbba279c4c2e270841f0a279d2be2f6
    (cherry picked from commit c0f8a2aad6e694c14dcdafb6e4d3c450e9a50000)