Making the number of nested NSGroup configurable

[OpenStack Infra]

https://review.openstack.org/261845
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 94e7fb6b1bb4743a9dcecbdcd69f8040a1254ca2
Author: Roey Chen <email address hidden>
Date: Mon Dec 28 07:34:30 2015 -0800

    Making the number of nested NSGroup configurable

    DocImpact
    nsx_v3:number_of_nested_groups - Should be determined based on the
    total expected number of security-groups, the default is to use 8 nested
    groups.
    At the moment, lowering this value will have no effect.

    Change-Id: I0dc74ff8f94fe419317a390dbd4f86ee7d60e776