When Opendaylight is selected as neutron-backend then the OvS
is installed not only in neutron-agent container and in Compute hosts
but also in neutron-server container.
Change-Id: I6ec5a9dcacf50883b613256dacef32795fc3b65e
Signed-off-by: Dimitrios Markou <mardim@intracom-telecom.com>