shouldn't disable ipv6 in gate

[Jeffrey Zhang]

now, lots of vms in gate depend on ipv6, disable it will lose the vm.

Got lots of POST_FAILURE like

gate-kolla-docs-ubuntu-trusty SUCCESS in 46s
gate-kolla-pep8-ubuntu-trusty FAILURE in 47s
gate-kolla-python27-ubuntu-trusty SUCCESS in 50s
gate-kolla-python34 SUCCESS in 1m 28s
gate-kolla-dsvm-build-centos-binary-centos-7-nv FAILURE in 4m 51s (non-voting)
gate-kolla-dsvm-deploy-centos-binary-centos-7-nv FAILURE in 3m 38s (non-voting)
gate-kolla-dsvm-build-centos-source-centos-7-nv FAILURE in 4m 31s (non-voting)
gate-kolla-dsvm-deploy-centos-source-centos-7-nv POST_FAILURE in 1h 45m 06s (non-voting)
gate-kolla-dsvm-build-ubuntu-binary-ubuntu-trusty-nv FAILURE in 2m 02s (non-voting)
gate-kolla-dsvm-build-ubuntu-source-ubuntu-trusty-nv FAILURE in 2m 05s (non-voting)
gate-kolla-dsvm-deploy-ubuntu-binary-ubuntu-trusty-nv FAILURE in 1m 31s (non-voting)
gate-kolla-dsvm-deploy-ubuntu-source-ubuntu-trusty-nv FAILURE in 3m 14s (non-voting)
gate-kolla-dsvm-build-oraclelinux-binary-centos-7-nv POST_FAILURE in 1h 45m 15s (non-voting)
gate-kolla-dsvm-deploy-oraclelinux-binary-centos-7-nv POST_FAILURE in 1h 45m 39s (non-voting)
gate-kolla-dsvm-build-oraclelinux-source-centos-7-nv POST_FAILURE in 1h 45m 12s (non-voting)
gate-kolla-dsvm-deploy-oraclelinux-source-centos-7-nv POST_FAILURE in 1h 45m 18s (non-voting)

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/400707
Committed: https://git.openstack.org/cgit/openstack/kolla-ansible/commit/?id=05a458a73963f1e08fcf7f27a5dae70de6a0e224
Submitter: Jenkins
Branch: master

commit 05a458a73963f1e08fcf7f27a5dae70de6a0e224
Author: Jeffrey Zhang <email address hidden>
Date: Tue Nov 22 20:06:10 2016 +0800

    Remove the disable of ipv6 in gate

    Disable ipv6 will lose the vm

    Change-Id: I7316d013d9281946c1c566279cd64ecbe6b67d37
    Closes-Bug: #1643858

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: stable/mitaka
Review: https://review.openstack.org/400922

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: stable/newton
Review: https://review.openstack.org/400923

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/400922
Committed: https://git.openstack.org/cgit/openstack/kolla/commit/?id=72d513210471f3aaea41c4fc876b736c74ba4038
Submitter: Jenkins
Branch: stable/mitaka

commit 72d513210471f3aaea41c4fc876b736c74ba4038
Author: Jeffrey Zhang <email address hidden>
Date: Tue Nov 22 20:06:10 2016 +0800

    Fix the gate

    This patch includes two backport patches, which make the gate green and
    possible to merge.

    Remove the disable of ipv6 in gate

    Disable ipv6 will lose the vm

    Closes-Bug: #1643858
    (cherry picked from commit 05a458a73963f1e08fcf7f27a5dae70de6a0e224)

    Update Percona repo to current release

    The Percona Repo was updated on the 14th November to version 0.1-4
    this commit updates rpm based builds to reflect that change.

    Closes-Bug: #1643867
    (cherry picked from commit 673700618d1a131b17440c6a70a4f17351f2aba3)

    Change-Id: I7316d013d9281946c1c566279cd64ecbe6b67d37

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/400923
Committed: https://git.openstack.org/cgit/openstack/kolla/commit/?id=76a564b16bf6b6c94b135a06b9ad21fb3571e293
Submitter: Jenkins
Branch: stable/newton

commit 76a564b16bf6b6c94b135a06b9ad21fb3571e293
Author: Jeffrey Zhang <email address hidden>
Date: Tue Nov 22 20:06:10 2016 +0800

    Remove the disable of ipv6 in gate

    Disable ipv6 will lose the vm

    Change-Id: I7316d013d9281946c1c566279cd64ecbe6b67d37
    Closes-Bug: #1643858
    (cherry picked from commit 05a458a73963f1e08fcf7f27a5dae70de6a0e224)

[OpenStack Infra (hudson-openstack)]

This issue was fixed in the openstack/kolla-ansible 4.0.0.0b2 development milestone.

[OpenStack Infra (hudson-openstack)]

This issue was fixed in the openstack/kolla 3.0.2 release.

[OpenStack Infra (hudson-openstack)]

This issue was fixed in the openstack/kolla 2.0.3 release.