Multiple policies can be specified in server-group-create command

[Takashi Natsume]

python-novaclient version 10.2.0

In "nova server-group-create", multiple policies can be specified.

----------------------------------------------------------------------
stack@devstack-master:/opt/devstack$ nova help server-group-create
usage: nova server-group-create <name> <policy> [<policy> ...]

Create a new server group with the specified details.

Positional arguments:
  <name> Server group name.
  <policy> Policies for the server groups.
----------------------------------------------------------------------

But only one item is allowed in nova side.

https://github.com/openstack/nova/blob/ceac5d54695dfe64bdf690775ba7c41e250bfa3e/nova/api/openstack/compute/schemas/server_groups.py#L38

In python-novaclient, only one policy should be allowed.

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/564699

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/564699
Committed: https://git.openstack.org/cgit/openstack/python-novaclient/commit/?id=57e9a5d34cde8cef319487cb56eca383cff76059
Submitter: Zuul
Branch: master

commit 57e9a5d34cde8cef319487cb56eca383cff76059
Author: Takashi NATSUME <email address hidden>
Date: Fri Apr 27 16:54:09 2018 +0900

    Fix the policy argument in server-group-create

    In the "server-group-create" command, multiple policies
    can be specified currently. But only one item is allowed
    in the nova side. So make the command allow only one policy.

    Change-Id: Ifd2d084faa2b849d6ee466d9accbad21b6a4e11b
    Closes-Bug: #1767287

[OpenStack Infra (hudson-openstack)]

This issue was fixed in the openstack/python-novaclient 10.3.0 release.

[OpenStack Infra (hudson-openstack)]

Related fix proposed to branch: master
Review: https://review.openstack.org/577341

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/577341
Committed: https://git.openstack.org/cgit/openstack/python-novaclient/commit/?id=db4fd9a5f07e560ddc6814661067949294bd3608
Submitter: Zuul
Branch: master

commit db4fd9a5f07e560ddc6814661067949294bd3608
Author: Chen <email address hidden>
Date: Fri Jun 22 11:07:20 2018 +0800

    Fix help text in server-group-create

    Only one policy is allowed in server-group-create.

    Change-Id: Id9cb6f96a5f8bcece1bcda88a97c6fb5f8a58bba
    Related-Bug: #1767287