Comment 9 for bug 1634734

Reviewed: https://review.opendev.org/688171
Committed: https://git.openstack.org/cgit/openstack/manila/commit/?id=e2fe03e25363a35bd07895505c18d349e4a330e7
Submitter: Zuul
Branch: stable/stein

commit e2fe03e25363a35bd07895505c18d349e4a330e7
Author: zengyingzhe <email address hidden>
Date: Fri Oct 28 15:26:22 2016 +0800

    Remove backend spec from share type while creating replica

    If a share type includes the share_backend_name spec,
    the scheduler may fail to schedule share replicas unless
    all backends in a replication domain share the same
    value for the capability "share_backend_name". Having
    the same "share_backend_name" isn't desirable all the
    time.

    Ignore the share_backend_name spec from share type
    while creating replica, so the scheduler will filter
    a available backend according to the selection policy.

    Change-Id: Ic8f7e6230298c222cc6cb5e4e4e8189524aaa81f
    Closes-Bug: #1634734
    (cherry picked from commit 700c1a02f0a357312df8f47932f83e86a3d2dc86)
    (cherry picked from commit 19c4869a3f004e4ec699412c1831765b714aa93b)