Update git submodules

Update git submodules

* Update python-openstackclient from branch 'master'
  to ed2dc692ddaf0b5b7fd62d2c7e0eb03c2e4b1287
  - Fix image owner change when accepting membership with --project

    When using 'openstack image set --project <project> --accept <image>',
    the command incorrectly changed the image owner. The --project parameter
    when used with membership flags should only identify which member's
    status to update, not change ownership.

    Closes-Bug: #2136795
    Change-Id: I1044b51f38000fb5339740bc40c7f8645c794402
    Signed-off-by: Abhishek Kekane <akekane@redhat.com>