Comment 84 for bug 1361360

Reviewed: https://review.openstack.org/164643
Committed: https://git.openstack.org/cgit/openstack/nova/commit/?id=392dc228034bbd8968f4c65ddfce6343bff938ea
Submitter: Jenkins
Branch: stable/icehouse

commit 392dc228034bbd8968f4c65ddfce6343bff938ea
Author: abhishekkekane <email address hidden>
Date: Tue Oct 21 01:37:42 2014 -0700

    Eventlet green threads not released back to pool

    Presently, the wsgi server allows persist connections hence even after
    the response is sent to the client, it doesn't close the client socket
    connection.
    Because of this problem, the green thread is not released back to the pool.

    In order to close the client socket connection explicitly after the
    response is sent and read successfully by the client, you simply have to
    set keepalive to False when you create a wsgi server.

    Icehouse backport note: socket_timeout was dropped, it was introduced
    in 0.14[*] and Icehouse eventlet lower bound is 0.13

    [*] https://github.com/eventlet/eventlet/commit/7d4916f01462de09cb58853d9de2e85777c2ad5b

    Note: The required unit-tests are manually added to the below path,
    as new path for unit-tests is not present in stable/icehouse release.
    nova/tests/test_wsgi.py

    DocImpact:
    Added wsgi_keep_alive option (default=True).

    SecurityImpact

    Conflicts:
            nova/tests/unit/test_wsgi.py

    Closes-Bug: #1361360
    (cherry picked from commit 04d7a724fdf80db51e73f12c5b8c982db9310742)

    Change-Id: I3b14a37edbe4bdc5db31ff4f08f78e78b60077ff