ML2 Cisco Nexus MD: Don't Overwrite Existing Configuration

[Rich Curran]

Cisco Nexus MD overwrites any other switchport VLAN configuration (such as management VLAN) that has been done on compute node ToR interfaces.

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/105514

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/105514
Committed: https://git.openstack.org/cgit/openstack/neutron/commit/?id=dd28d84a956e6ed00eeb8097d4c0be0c88bc52ba
Submitter: Jenkins
Branch: master

commit dd28d84a956e6ed00eeb8097d4c0be0c88bc52ba
Author: Abishek Subramanian <email address hidden>
Date: Tue Oct 28 14:36:32 2014 -0400

    ML2 Cisco Nexus MD - not overwriting existing config

    The Cisco Nexus ML2 MD overwrites any existing switchport
    VLAN config such as management VLANs that are preconfigured
    in the compute node ToR interfaces.
    This bug addresses that issue and ensures the config is not
    wiped out.

    Closes-Bug: 1330597

    Change-Id: Ie2969e5750a179a4940d12db4c9ee6e1ec53b79b