configure ODL as BGP server

configure ODL as BGP server

1. Quagga packages are kept as tar.gz package in remote location,
downloaded/extracted/configured as local distribution repository
(apt/yum/zypper) accordingly to install the Quagga and its dependent
packages seamlessly

2. Quagga to be installed on the neutron server nodes, but its configued
as BGP speaker for OpenDaylight in one of the neutron server node if it
is running in cluster environment.

Change-Id: If3907c76a57cb7d58e78ec0201c01b27baefb472
Signed-off-by: Periyasamy Palanisamy <periyasamy.palanisamy@ericsson.com>