Comment 4 for bug 1452747

Reviewed: https://review.openstack.org/183446
Committed: https://git.openstack.org/cgit/openstack/manila/commit/?id=77c3553f60a949610fc377112e0f562c1c5cdffd
Submitter: Jenkins
Branch: stable/kilo

commit 77c3553f60a949610fc377112e0f562c1c5cdffd
Author: Valeriy Ponomaryov <email address hidden>
Date: Fri May 8 16:04:41 2015 +0300

    Fix share-server resources cleanup in generic driver

    Generic driver using Neutron creates and attaches service subnets to router.
    When we have more than one share server using same service subnet and delete
    one of them, then Manila removes service subnet from router.
    It is improper behaviour, because other, not deleted, share servers lose
    connection in that case. So, add port validation to get to know for sure,
    whether service subnet is used or not.

    Change-Id: I6e7d4c1b40304be39f84a23c00433f47a295d02c
    Closes-Bug: #1452747
    (cherry picked from commit c7f57b0d7bf2c45d30f8494a5fb4b6d42ec38583)