Introduce new command 'list-filters' to retrieve
enabled resource filters.

```
command: cinder list-filters --resource=volume

output:
+----------------+-------------------------------+
| Resource       | Filters                       |
+----------------+-------------------------------+
| volume         | name, status, image_metadata  |
+----------------+-------------------------------+

```

Also Added new option '--filters' to these list commands:
1. list
2. snapshot-list
3. backup-list
4. attachment-list
5. message-list
6. group-list
7. group-snapshot-list
8. get-pools

Change-Id: I062e6227342ea0d940a8333e84014969c33b49df
Partial: blueprint generalized-filtering-for-cinder-list-resource
Depends-On: 04bd22c1eb371805a3ce9f6c8915325bc0da2d36
Depends-On: 7fdc4688fea373afb85d929e649d311568d1855a

In case of constructing Client with session without specifying `retries`
value, `cinderclient.client.Client.retries` value become to None,
instead of 0. This raises TypeError on python 3 during comparison
`attempts > self.retries` on
`cinderclient.client.SessionClient._cs_request`

Closes-Bug: #1684787
Change-Id: If1ac36acb0d1c92e9779e3e8995606c9b34f2cde

Add an attachments API
This includes a new attachment controller and shell
commands.  To use you'll need to set your api version
    `export OS_VOLUME_API_VERSION=3.27`

Now you can do things like attach a volume (cinders part at least):
    `cinder attachment-create --connect True ......`

List/show/delete existing attachments:
    `cinder attachment-list`
    `cinder attachment-show <attachment-id>`
    `cinder attachment-delete <attachemnt-id>`

Change-Id: I2c463f0910b6c9e37502869b7ec33073f12939f1

GET /messages
GET /messages/{id}
DELETE /message/{id}

Partially-Implements: blueprint summarymessage
Depends-On: I398cbd02b61f30918a427291d1d3ae00435e0f4c
Change-Id: Ic057ab521c048a376d2a6bed513b8eb8118810d1

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

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

Added new private method to log request-id of each api call
for both SessionClient and HTTPClient. Already available
ks_logger and client_logger will be used for SessionClient
and HTTPClient respectively.

Change-Id: I679c57b96071ecd9bcd1ab2ed50692195586ca52
Implements: blueprint log-request-id

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