missing "volume:delete_volume_metadata" and "volume:update_volume_metadata" in policy.json

[Anna Sortland]

The default /etc/cinder/policy.json is missing rules for
   "volume:delete_volume_metadata" and
   "volume:update_volume_metadata".
Corresponding APIs are implemented in cinder/api/v2/volume_metadata.py, which makes calls to cinder/volume/api.py methods.

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/202701

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/202701
Committed: https://git.openstack.org/cgit/openstack/cinder/commit/?id=3dc9fd1df43159008b7020d98904fb59a0d61bb0
Submitter: Jenkins
Branch: master

commit 3dc9fd1df43159008b7020d98904fb59a0d61bb0
Author: Anna Sortland <email address hidden>
Date: Thu Jul 16 11:59:31 2015 -0500

    Add delete/update_volume_metadata policy rules

    The default /etc/cinder/policy.json is missing rules for
       "volume:delete_volume_metadata" and
       "volume:update_volume_metadata".
    This change adds them.

    Change-Id: I57a4abbf41af4c91a0fb16e145f4edef15a699d6
    Closes-Bug: #1472037