cinder get-pools --filters doesn't support Unicode

[junboli]

$ cinder get-pools --filters name~=美国
  usage: cinder get-pools [--detail] [--filters [<key=value> [<key=value> ...]]]
  error: argument --filters: invalid str value: u'name~=\u7f8e\u56fd'
  Try 'cinder help get-pools' for more information.

This needs to support Unicode args, since the fields in the Cinder service support Unicode.

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/479122

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/479122
Committed: https://git.openstack.org/cgit/openstack/python-cinderclient/commit/?id=a87622ead5b3bc3dc2573aae134fb8a3971861eb
Submitter: Jenkins
Branch: master

commit a87622ead5b3bc3dc2573aae134fb8a3971861eb
Author: junboli <email address hidden>
Date: Fri Jun 30 11:13:03 2017 +0800

    Fix support for Unicode value filters

    Cinder supports Unicode value filters for API get-pools, therefore,
    Here needs to support Unicode value filters as well.

    Change-Id: I51df61f9465d84c408fc057443a37834c453de41
    Closes-Bug: #1701427

[OpenStack Infra (hudson-openstack)]

This issue was fixed in the openstack/python-cinderclient 3.1.0 release.