include a note about deleting namespaces in Neutron

[Edgar Magana]

Currently, the default configuration for Neutron namespaces for both DHCP and L3 is set-up to not deleted them. This is due to the fact that ip route delete functionality may fail and the reason is known yet. This is why the networking community has decided to have this configuration.
Many operators have raised an issue claiming that namespaces are not deleted but the problem is a wrong configuration in their deployments. This note will clarify the expected behavior.

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/141837

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/141837
Committed: https://git.openstack.org/cgit/openstack/openstack-manuals/commit/?id=66db5fcba7f6ba71651f160247fa515973c5357e
Submitter: Jenkins
Branch: master

commit 66db5fcba7f6ba71651f160247fa515973c5357e
Author: Edgar Magana <email address hidden>
Date: Mon Dec 15 10:41:30 2014 -0600

    Clarify that namespaces are not deleted by default for DHCP and L3 agents

    All namespaces for DHCP and L3 agent in Neutron are not deleted
    by default, this note indicates that and also clarifies that this
    behaviour can be changed for both agents via configuration files

    Change-Id: If9b7431fb29ea52552147c92847da465801bb0f1
    Closes-bug: #1402739
    Related-bug: #1052535

[OpenStack Infra (hudson-openstack)]

This issue was fixed in the openstack/openstack-manuals 15.0.0 release.