Remove l3 deprecated options

[Cedric Brandily]

dhcp/l3 agent use_namespaces and external_network_bridge options has been deprecated in Liberty[1,2].

Now kernels property support namespaces, removing this option allow to simplify agent code and remove an option (use_namespaces == False) not functionally tested.

[1] https://bugs.launchpad.net/neutron/+bug/1435382
[2] https://review.openstack.org/#/c/219928/

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/238213

[OpenStack Infra (hudson-openstack)]

Related fix proposed to branch: master
Review: https://review.openstack.org/239568

[OpenStack Infra (hudson-openstack)]

Related fix proposed to branch: master
Review: https://review.openstack.org/239570

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/239770

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/239570
Committed: https://git.openstack.org/cgit/openstack/neutron-fwaas/commit/?id=e50e0c5a4bd1eb15a005a1f238ded062ea115a38
Submitter: Jenkins
Branch: master

commit e50e0c5a4bd1eb15a005a1f238ded062ea115a38
Author: Cedric Brandily <email address hidden>
Date: Tue Oct 27 11:47:46 2015 +0900

    Prepare neutron "use_namespaces" option removal

    The neutron use_namespaces option is deprecated since Kilo, it's time
    remove it from neutron, neutron-*aas and devstack. This change removes
    use_namespaces option usage in unit/functional tests in order to prepare
    option removal from neutron and tests testing use_namespace=False case.
    This change continues to define use_namespaces option because it's
    required by neutron code without using neutron
    register_use_namespaces_opts_helper which will be removed from neutron.

    Related-Bug: #1508188
    Change-Id: I303038eec560a6d99421140c2822aed8b518470b

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/238213
Committed: https://git.openstack.org/cgit/openstack/neutron/commit/?id=23b907bc6e87be153c13b1bf3e069467cdda0d27
Submitter: Jenkins
Branch: master

commit 23b907bc6e87be153c13b1bf3e069467cdda0d27
Author: Cedric Brandily <email address hidden>
Date: Wed Oct 21 20:52:40 2015 +0200

    Remove deprecated use_namespaces option

    The use_namespaces option has been defined as a workaround to kernels
    not properly supporting namespaces. This limitation is behind us, it's
    time to remove use_namespaces after its deprecation in Kilo in order to
    simplify code and remove a poorly tested case (use_namespaces=False).

    This change prepares for removal pullup_route method[1] which was only
    used when use_namespaces=False.

    [1] neutron.agent.linux.ip_lib

    DocImpact
    UpgradeImpact
    Closes-Bug: #1508188
    Related-Bug: #1435382
    Depends-On: I303038eec560a6d99421140c2822aed8b518470b
    Depends-On: I4feb2a15c7e1e4bfdbed2531b18b8e7d798ab3cc
    Change-Id: I2fbf65df1250d9f9f1656b3964ee3b6de1ef1118

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/239770
Committed: https://git.openstack.org/cgit/openstack/neutron-fwaas/commit/?id=750cd05b3492850b50602e965c729fbc37ee7030
Submitter: Jenkins
Branch: master

commit 750cd05b3492850b50602e965c729fbc37ee7030
Author: Cedric Brandily <email address hidden>
Date: Wed Oct 28 08:39:36 2015 +0900

    Remove deprecated use_namespaces option

    use_namespace option has been removed from neutron so we can cleanup
    neutron-fwaas.

    Closes-Bug: #1508188
    Depends-On: I2fbf65df1250d9f9f1656b3964ee3b6de1ef1118
    Change-Id: Iaec250bc07f2099a09a4b8831c59abe6ce34062c

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/239568
Committed: https://git.openstack.org/cgit/openstack/neutron-vpnaas/commit/?id=7675d924ab038d284a64419f566a0c7c950f8733
Submitter: Jenkins
Branch: master

commit 7675d924ab038d284a64419f566a0c7c950f8733
Author: Cedric Brandily <email address hidden>
Date: Tue Oct 27 11:36:06 2015 +0900

    Prepare neutron "use_namespaces" option removal

    The neutron use_namespaces option is deprecated since Kilo, it's time
    remove it from neutron, neutron-*aas and devstack. This change removes
    use_namespaces option usage (without changing behavior) in
    unit/functional tests in order to prepare option removal from neutron.

    Partial-Bug: #1508188

    Depends-On: I2fbf65df1250d9f9f1656b3964ee3b6de1ef1118
    Change-Id: I84c1d3270448b1f085840d356532794974e5b31e

[Thierry Carrez (ttx)]

This issue was fixed in the openstack/neutron 8.0.0.0b1 development milestone.

[Thierry Carrez (ttx)]

This issue was fixed in the openstack/neutron-fwaas 8.0.0.0b1 development milestone.

[OpenStack Infra (hudson-openstack)]

Change abandoned by Doug Wiegley (<email address hidden>) on branch: master
Review: https://review.openstack.org/237218
Reason: This review is > 4 weeks without comment and currently blocked by a core reviewer with a -2. We are abandoning this for now. Feel free to reactivate the review by pressing the restore button and contacting the reviewer with the -2 on this review to ensure you address their concerns.

[Armando Migliaccio (armando-migliaccio)]

Need new owner to finish off the external_network_bridge option removal.

[Launchpad Janitor (janitor)]

[Expired for neutron because there has been no activity for 60 days.]

[OpenStack Infra (hudson-openstack)]

Change abandoned by Darek Smigiel (<email address hidden>) on branch: master
Review: https://review.openstack.org/295901
Reason: garyk's patch here: https://review.openstack.org/#/c/296354/