port update failed if enable observe

[huangtianhua]

observe_on_update = true

1. create a port with template:
heat_template_version: 2015-10-15
parameters:
  net:
    type: string
    default: private
resources:
  my_port:
    type: OS::Neutron::Port
    properties:
      name: see
      network: {get_param: net}
2. after the stack created success, update the stack without change anything
3. the stack update failed, the reason is: Resource UPDATE failed: BadRequest: resources.my_port: Invalid input for device_owner. Reason: 'None' is not a valid string.

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/493736

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/493736
Committed: https://git.openstack.org/cgit/openstack/heat/commit/?id=d12498fb4c329d6f2985cb78b1c1405fe1185265
Submitter: Jenkins
Branch: master

commit d12498fb4c329d6f2985cb78b1c1405fe1185265
Author: huangtianhua <email address hidden>
Date: Tue Aug 15 11:30:47 2017 +0800

    Make sure port updating works if enable observe

    Set default values for some properties of neutron
    port resource, to make sure port updating works.

    Change-Id: I081ad863d4c4876d19ea9f139565afdc5558c6bb
    Closes-Bug: #1710076

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: stable/pike
Review: https://review.openstack.org/497107

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/497107
Committed: https://git.openstack.org/cgit/openstack/heat/commit/?id=2b94474d317c5c3c1ce64404dcc201ff51076902
Submitter: Jenkins
Branch: stable/pike

commit 2b94474d317c5c3c1ce64404dcc201ff51076902
Author: huangtianhua <email address hidden>
Date: Tue Aug 15 11:30:47 2017 +0800

    Make sure port updating works if enable observe

    Set default values for some properties of neutron
    port resource, to make sure port updating works.

    Change-Id: I081ad863d4c4876d19ea9f139565afdc5558c6bb
    Closes-Bug: #1710076
    (cherry picked from commit d12498fb4c329d6f2985cb78b1c1405fe1185265)

[OpenStack Infra (hudson-openstack)]

This issue was fixed in the openstack/heat 10.0.0.0b1 development milestone.

[OpenStack Infra (hudson-openstack)]

This issue was fixed in the openstack/heat 9.0.1 release.