Comment 2 for bug 1660420

Reviewed: https://review.openstack.org/428077
Committed: https://git.openstack.org/cgit/openstack/manila/commit/?id=c4b65df374562540f83f6478e51ce2f2949aab73
Submitter: Jenkins
Branch: master

commit c4b65df374562540f83f6478e51ce2f2949aab73
Author: Alyson Rosa <email address hidden>
Date: Wed Feb 1 14:09:32 2017 -0200

    Fix HNAS driver always handling mountable snapshots

    HNAS driver always handles snapshots as if mount_snaphot_support
    is always True.
    The driver always create exports in snapshot_create and tries to
    delete it in snapshot_delete. Also, the driver tries to add rules
    for exports in snapshot_update_access without checking if the export
    exists.

    Fixing it by checking the key 'mount_snapshot_support' in shares and
    checking if the snapshot has an export before adding or removing
    rules.

    Change-Id: If25d68d04400f0e9015f6ad6aff845f9c5d47f94
    Closes-bug: #1660420
    Closes-bug: #1660421