Deleting multiple volume metadata keys with a single request
to improve performance. To delete multiple metadata items without
affecting the remaining ones, just update the metadata items with
the updated complete list of ones (without items to delete)
in the body of the request. This patch uses etags to avoid the
lost update problem with volume metadata. The command isn't changed:

 $ cinder metadata volume_id unset k1 k2 k3

Co-Authored-By: Ivan Kolodyazhny <e0ne@e0ne.info>
Depends-On: I575635258c10f299181b8e4cdb51a7ad1f1be764
Implements: blueprint delete-multiple-metadata-keys
Change-Id: I8e18133ffee87c240a7af4b8177683ab99330d9e

This patch adds support for group snapshots.

Server side API patch was merged:
    https://review.openstack.org/#/c/361369/

Current microversion is 3.14. The following CLI's are supported:
cinder --os-volume-api-version 3.14 group-create-from-src
    --name my_group --group-snapshot <group snapshot uuid>
cinder --os-volume-api-version 3.14 group-create-from-src
    --name my_group --source-group <source group uuid>
cinder --os-volume-api-version 3.14 group-snapshot-create
    --name <name> <group uuid>
cinder --os-volume-api-version 3.14 group-snapshot-list
cinder --os-volume-api-version 3.14 group-snapshot-show
    <group snapshot uuid>
cinder --os-volume-api-version 3.14 group-snapshot-delete
    <group snapshot uuid>

Depends-on: I2e628968afcf058113e1f1aeb851570c7f0f3a08
Partial-Implements: blueprint generic-volume-group
Change-Id: I5c311fe5a6aeadd1d4fca60493f4295dc368944c

This patch adds support to generic volume groups.

Server patch is here: https://review.openstack.org/#/c/322459/

Current microversion is 3.13. The following CLI's are supported:
cinder --os-volume-api-version 3.13 group-create --name my_group
    <group type uuid> <volume type uuid>
cinder --os-volume-api-version 3.13 group-list
cinder --os-volume-api-version 3.13 create --group-id <group uuid>
    --volume-type <volume type uuid> <size>
cinder --os-volume-api-version 3.13 group-update <group uuid>
    --name new_name  description new_description
    --add-volumes <uuid of volume to add>
    --remove-volumes <uuid of volume to remove>
cinder --os-volume-api-version 3.13 group-show <group uuid>
cinder --os-volume-api-version 3.13 group-delete
    --delete-volumes <group uuid>

Depends-on: I35157439071786872bc9976741c4ef75698f7cb7
Change-Id: Icff2d7385bde0a7c023c2ca38fffcd4bc5460af9
Partial-Implements: blueprint generic-volume-group

Our current APIVersion object has an is_null method to check when the
version instance is null (major=0 and minor=0).

While this works it is not very pythonic, since you have to write
expressions such as:

 if not min_version and not max_version:
     return True
 elif ((min_version and max_version) and
       max_version.is_null() and min_version.is_null()):
     return True

This patch removes the is_null method and instead implements the truth
value testing to simplify expressions and make code more pythonic.

So previous code would just look like:

 if not min_version and not max_version:
     return True

Because this will work with min_version being None or being an
APIVersion instance with major=0 and minor=0.

Change-Id: I7497c5dc940c1e726507117cadbad232d8c1d80d

This patch adds support for group types and group specs
in the client.

Server patch is merged: https://review.openstack.org/#/c/320165/

Current microversion is 3.11. The following CLI's are supported.
cinder --os-volume-api-version 3.11 group-type-create my_test_group
cinder --os-volume-api-version 3.11 group-type-list
cinder --os-volume-api-version 3.11 group-type-show my_test_group
cinder --os-volume-api-version 3.11 group-type-key my_test_group
    set test_key=test_val
cinder --os-volume-api-version 3.11 group-specs-list
cinder --os-volume-api-version 3.11 group-type-key my_test_group
    unset test_key
cinder --os-volume-api-version 3.11 group-type-update <group type uuid>
    --name "new_group" --description "my group type"
cinder --os-volume-api-version 3.11 group-type-delete new_group

Change-Id: I161a96aa53208e78146cb115d500fd6b2c42d046
Partial-Implements: blueprint generic-volume-group

String interpolation should be delayed to be handled by the logging
code, rather than being done at the point of the logging call.
See the oslo i18n guideline.
* http://docs.openstack.org/developer/oslo.i18n/guidelines.html

Change-Id: I3fa26c1c5c672d5505fa556e03af35318f4774ab
Closes-Bug: #1596829

This patch updates client to support cluster related changes on the API
done on microversion 3.7.

Service listing will include "cluster_name" field and we have 4 new
commands, "cluster-list", "cluster-show", "cluster-enable" and
"cluster-disable".

Specs: https://review.openstack.org/327283
Implements: blueprint cinder-volume-active-active-support
Depends-On: If1ef3a80900ca6d117bf854ad3de142d93694adf
Change-Id: I824f46b876e21e552d9f0c5cd3e836f35ea31837

Added --visibility and --protected options
when uploading volumes to the image service.

DocImpact

Change-Id: Ie639179c5bbbaca4de62b42b368830afcfd8f7ac
Closes-Bug: #1288131
Depends-On: I6e6b2276af22b7809ea88289427c6873211b3faf
Signed-off-by: Nathaniel Potter <nathaniel.potter@intel.com>

Changes to cinderclient to use microversions.

Implements: blueprint api-microversion-support-for-cinderclient
api-microversion-support-for-cinderclient

Change-Id: I840a1162b88e8ff36fa3fc4e1d6b9317104df3e0