Some volume api related policy rule is not used by any code

[Alex Xu]

There are some policy rules in etc/poliy.conf didn't used by any code:

    "volume:create": "",
    "volume:get_all": "",
    "volume:get_volume_metadata": "",
    "volume:get_snapshot": "",
    "volume:get_all_snapshots": "",

    "volume_extension:types_manage": "rule:admin_api",
    "volume_extension:types_extra_specs": "rule:admin_api",
    "volume_extension:volume_admin_actions:reset_status": "rule:admin_api",
    "volume_extension:snapshot_admin_actions:reset_status": "rule:admin_api",
    "volume_extension:volume_admin_actions:force_delete": "rule:admin_api",

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/138645

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/138645
Committed: https://git.openstack.org/cgit/openstack/nova/commit/?id=61497bf6c4910eedb64494599f7dde25f2500629
Submitter: Jenkins
Branch: master

commit 61497bf6c4910eedb64494599f7dde25f2500629
Author: He Jie Xu <email address hidden>
Date: Wed Dec 3 14:18:42 2014 +0800

    Remove the volume api related useless policy rules

    There are some old policy rules used by old nova volume, those are
    useless anymore, this patch clean them up.

    Change-Id: Ibcdba00652808158019600f8ad75e80c85f9423e
    Closes-Bug: #1398686