Comment 2 for bug 1481856

Reviewed: https://review.openstack.org/211676
Committed: https://git.openstack.org/cgit/openstack/networking-cisco/commit/?id=46d364dc9f3b24e654939f822ea048e3cbf227c6
Submitter: Jenkins
Branch: master

commit 46d364dc9f3b24e654939f822ea048e3cbf227c6
Author: Carol Bouchard <email address hidden>
Date: Tue Aug 11 13:14:17 2015 -0400

    Quick retry connect to resolve stale ncclient handle

    When the Nexus switch reboots, OpenStack Nexus Driver will be left
    with a stale ncclient handle resulting in an exception. When an
    exception is encountered, another retry is performed within the driver.
    The first exception information is saved so if the second exception
    fails again, we report on the first exception.
    As part of this fix, I've removed code which supports 2 versions
    of ncclient since the older version no longer meets the version
    configured in our requirements.txt.

    Change-Id: I182440c3a19e7c57e4dfe69e4013ea7bf87aa7ab
    Closes-bug: #1481856