Hostname is null in output of magnum service-list when magnum is setup with devstack

[yatin]

Reproduction steps:-
1)setup magnum with devstack
2) source openrc
3) magnum service-list
+----+------------+------------------+-------+----------+-----------------+---------------------------+---------------------------+
| id | host | binary | state | disabled | disabled_reason | created_at | updated_at |
+----+------------+------------------+-------+----------+-----------------+---------------------------+---------------------------+
| 1 | - | magnum-conductor | up | | - | 2016-10-03T05:07:56+00:00 | 2016-10-04T09:41:16+00:00 |
+----+------------+------------------+-------+----------+-----------------+---------------------------+---------------------------+

Host should be hostname when magnum is setup so that user should know the output is correct.

Earlier it used to be hostname by default in configuration but following patch(https://review.openstack.org/#/c/352806) has changed the behaviour.
We should set configuration parameter "host" to hostname and update the guide if required to specify the behaviour of this parameter.

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/382235

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/382235
Committed: https://git.openstack.org/cgit/openstack/magnum/commit/?id=4ffad1d32d3134cb5f0151439977b34d146ef0c7
Submitter: Jenkins
Branch: master

commit 4ffad1d32d3134cb5f0151439977b34d146ef0c7
Author: yatin <email address hidden>
Date: Wed Oct 5 15:16:19 2016 +0530

    Set config param [DEFAULT]/host to hostname

    Patch: https://review.openstack.org/#/c/352806 has
    set host=None and we don't change this parameter
    neither in devstack installation nor in manual installation.
    With this patch value of [DEFAULT]/host is set to
    hostname of the host on which magnum is setup.
    Also, updated manual installation step to set [DEFAULT]/host
    to hostname.

    Depends-on: I51feb6ccdc0fab91a591568866e6801f2bbb319b
    Change-Id: Id43bfcc792b28c98c9bf1d888dd7ddcc167e8ea5
    Closes-Bug: #1630190

[OpenStack Infra (hudson-openstack)]

This issue was fixed in the openstack/magnum 4.0.0 release.