Volume v2 capabilities & scheduler-stats service clients makes v1 APIs call

[Ghanshyam Mann]

Below Volume v2 service clients makes call t v1 APIs instead of v2 API.
- SchedulerStatsClient - tempest/lib/services/volume/v2/scheduler_stats_client.py
- CapabilitiesClient - tempest/lib/services/volume/v2/capabilities_client.py

Those service clients were added for v2 APIs as mentioned in release notes (https://docs.openstack.org/releasenotes/tempest/v14.0.0.html).
Those clients did not mention the api_version and it goes on default version which is v1.

Fix should be to make v2 API call as being promised via these stable interfaces.

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/437443
Committed: https://git.openstack.org/cgit/openstack/tempest/commit/?id=49f99e7ece9f84af06bf1d0aa4f3dbe1c41ef3dc
Submitter: Jenkins
Branch: master

commit 49f99e7ece9f84af06bf1d0aa4f3dbe1c41ef3dc
Author: ghanshyam <email address hidden>
Date: Thu Feb 23 15:34:26 2017 +0000

    Fix volume v2 capabilities/scheduler-stats tests to test v2 APIs

    Currently capabilities/scheduler-stats tests for volume v2 APIs are
    making call to v1 API instead of v2. Because api_version is missing in
    respective service clients.

    This commit fix the issue by specifying the api_version as v2 on
    service clients to make API call on v2 endpoints.

    Closes-Bug: #1667354

    Change-Id: I9002c5ef8b4641597561d2b909bf5914ab8d9995

[OpenStack Infra (hudson-openstack)]

This issue was fixed in the openstack/tempest 16.0.0 release.