group snapshot doesn't support filter, sorter and pagnination

[TommyLike]

Cinder had already add filter, sorter and pagination support for most resources. but it doesn't support group snapshot
```
## list/detail without filter ##
http://ipaddress/v3/fe3111089a75410e9cedc624897b1813/group_snapshots/detail
result:
{
  "group_snapshots": [
    {
      "status": "available",
      "name": null,
      "group_type_id": "a8205e69-9eff-40f5-be3f-f7439dae3f79",
      "created_at": "2017-03-03T08:24:55.000000",
      "group_id": "6ca0b500-2a8f-4f2e-ad67-2dca449717df",
      "id": "6917bba2-34c2-4992-aa68-bf37cac6a2d4",
      "description": "second group snapshot"
    },
    {
      "status": "available",
      "name": "first_group_snapshot",
      "group_type_id": "a8205e69-9eff-40f5-be3f-f7439dae3f79",
      "created_at": "2017-03-03T08:24:35.000000",
      "group_id": "6ca0b500-2a8f-4f2e-ad67-2dca449717df",
      "id": "85feeb25-addb-43ab-8ee6-a6f2d00da260",
      "description": "first group snapshot"
    }
  ]
}
## list/detail with filter##
http://ipaddress/v3/fe3111089a75410e9cedc624897b1813/group_snapshots/detail?group_type_id=a8205e69-9eff-40f5-be3f-f7439dae3f79
result:
{
  "group_snapshots": [
    {
      "status": "available",
      "name": null,
      "group_type_id": "a8205e69-9eff-40f5-be3f-f7439dae3f79",
      "created_at": "2017-03-03T08:24:55.000000",
      "group_id": "6ca0b500-2a8f-4f2e-ad67-2dca449717df",
      "id": "6917bba2-34c2-4992-aa68-bf37cac6a2d4",
      "description": "second group snapshot"
    },
    {
      "status": "available",
      "name": "first_group_snapshot",
      "group_type_id": "a8205e69-9eff-40f5-be3f-f7439dae3f79",
      "created_at": "2017-03-03T08:24:35.000000",
      "group_id": "6ca0b500-2a8f-4f2e-ad67-2dca449717df",
      "id": "85feeb25-addb-43ab-8ee6-a6f2d00da260",
      "description": "first group snapshot"
    }
  ]
}
The filter doesn't work

[Xing Yang (xing-yang)]

Patch is submitted here:

https://review.openstack.org/#/c/441651/

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/441651
Committed: https://git.openstack.org/cgit/openstack/cinder/commit/?id=cb5aaf0bcb894a141a9bfb50b9aff4fb209fc850
Submitter: Jenkins
Branch: master

commit cb5aaf0bcb894a141a9bfb50b9aff4fb209fc850
Author: TommyLike <email address hidden>
Date: Sun Mar 5 14:51:00 2017 +0800

    Add filter, sorter and pagination for group snapshot

    Add filter, sorter and pagination support in group
    snapshot with new microversion v3.29.

    APIImpact
    Closes-Bug: #1670540

    Change-Id: I2ed1b87b022314b157fe432a97783ab50316367b

[OpenStack Infra (hudson-openstack)]

This issue was fixed in the openstack/cinder 11.0.0.0b1 development milestone.