Comment 8 for bug 1687044

Reviewed: https://review.openstack.org/461827
Committed: https://git.openstack.org/cgit/openstack/cinder/commit/?id=30de1d709e7256c38976a4d11c1ccae99b8b869b
Submitter: Jenkins
Branch: stable/ocata

commit 30de1d709e7256c38976a4d11c1ccae99b8b869b
Author: Sean McGinnis <email address hidden>
Date: Fri Apr 28 14:14:16 2017 -0500

    Give more time for LVM deactivation

    Current code retries three times for deactivation to complete,
    waiting one second between retries. On some heavily loaded
    systems, and apparently the gate, this is not enough time for
    the operation to complete.

    This attempts to work around those slower systems by increasing
    our retries to 5 and adding a backoff of 2 seconds to give it
    more time.

    Change-Id: I4f40a1984fe828c8ff965033f7e25b1d7516ab1e
    Closes-bug: #1687044
    (cherry picked from commit 5744301777e6c557bd44436ad5a45613631d0f08)