Admin util: add in option to set the DVS teaming policy

[OpenStack Infra]

https://review.openstack.org/284732
Dear bug triager. This bug was created since a commit was marked with DOCIMPACT.
Your project "openstack/vmware-nsx" is set up so that we directly report the documentation bugs against it. If this needs changing, the docimpact-group option needs to be added for the project. You can ask the OpenStack infra team (#openstack-infra on freenode) for help if you need to.

commit 29c576ac045f317978e9eed8db4b47cd909b68fe
Author: Gary Kotton <email address hidden>
Date: Thu Feb 25 06:19:18 2016 -0800

    Admin util: add in option to set the DVS teaming policy

    The patch adds support to the admin utility to enable an admin to update
    the teaming policy of a DVS. This is done as follows:

    nsxadmin -r networks -o nsx-update --property dvs-id=<id> --property teamingpolicy=<policy>

    Supported polices currently are:
    FAILOVER_ORDER|ETHER_CHANNEL|LACP_ACTIVE|LACP_PASSIVE|LOADBALANCE_LOADBASED
    |LOADBALANCE_SRCID|LOADBALANCE_SRCMAC|LACP_V2

    DocImpact

    Change-Id: I04a5ed67f3b54a522b5790a959fad62f8bed51a4