server network info update incorrect

[huangtianhua]

1. create a stack with a nova server:

heat_template_version: 2013-05-23
resources:
 hth_server:
    type: OS::Nova::Server
    properties:
      image: cirros-0.3.0-x86_64-disk
      networks: [{network: a1f566f3-0d08-4fec-9458-f5eb75552404}]
      flavor: 1
2. the server in active, and with an ip in network1
3. update the server to network2

heat_template_version: 2013-05-23
resources:
 hth_server:
    type: OS::Nova::Server
    properties:
      image: cirros-0.3.0-x86_64-disk
      networks: [{network: 18169c58-bb5c-4ef9-bc5d-66bad9cbf9d4}]
      flavor: 1
4. expected: the server with ip in network2
    actual: the server has two ips both in network1 and network2

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/161635

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/161635
Committed: https://git.openstack.org/cgit/openstack/heat/commit/?id=c96c37f2e35950e8b9825ca841fa3a6902b5da48
Submitter: Jenkins
Branch: master

commit c96c37f2e35950e8b9825ca841fa3a6902b5da48
Author: huangtianhua <email address hidden>
Date: Thu Mar 5 15:49:18 2015 +0800

    Correct networks matching interface ports

    User can specify 'network' or 'uuid' for network id,
    should matching the 'uuid' for networks when finding
    equal interface.

    Change-Id: Id5716ad3b26f31b4aac7b9d2f645e481b3733aa9
    Closes-Bug: #1428489