Overriding lbaas.py file

This patch is a forward-port of a patch from puppet-coe-service-patch
which had the following commit message:

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Revision: 4ee88b7361bc378b2f2dc6828d69838d914dd18a
Author: Ernest Millan <emillan@cisco.com>
Date: 7/9/2014 12:36:12 PM

    Overriding lbaas.py file and related puppet manifest update for TA2342
    Change-Id: Ifddb4036de15aad50a5ace0693fe297412cc389c

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Implements: rally-user-story US4145
Implements: rally-task TA3483
Not-in-upstream: true