eventlet monkey patches getaddrinfo if dnspython is installed

[Michael Still]

But the monkeypatched version doesn't support IPv6 very well. We should disable this monkey patch.

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/26189

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/26325

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/26325
Committed: http://github.com/openstack/nova/commit/f2e49ad3128856785f6ea460b1968bf03dc87e99
Submitter: Jenkins
Branch: master

commit f2e49ad3128856785f6ea460b1968bf03dc87e99
Author: Michael Still <email address hidden>
Date: Mon Apr 8 07:46:34 2013 +1000

    Import eventlet in __init__.py

    All of this is because if dnspython is present in your environment then
    eventlet monkeypatches socket.getaddrinfo() with an implementation
    which doesn't work for IPv6. To turn this off you need to set an
    environment variable before you do the import.

    Resolves bug 1164822.

    Change-Id: I2382db7b3ac4a2d940e0c45dfe3d48f499de2f16

[Dolph Mathews (dolph)]

<fungi>: bknudson: dolphm: to catch you up, immediately after swift landed a change in master to start depending on dnspython, keystone master and stable/grizzly unit tests began doing this on centos... http://logs.openstack.org/periodic/periodic-keystone-python26-stable-grizzly-centos6/4/console.html.gz
<fungi>: bknudson: dolphm: note that http://logs.openstack.org/periodic/periodic-keystone-python26-stable-grizzly-centos6/3/console.html.gz passed on the same exact keystone gitsha the night before, and the only difference according to pip freeze was that dnspython was suddenly present

[Morgan Fainberg (mdrnstm)]

This issue appears to be resolved within Keystone by https://review.openstack.org/#/c/29050/ use of keystone.common.environment should have resolved the issues (same general fix as for nova) seen here.

[Dolph Mathews (dolph)]

Marking as invalid then, as this was effectively superceded by https://blueprints.launchpad.net/keystone/+spec/extract-eventlet