updated existing sr tests for sr api changes in vpp
updated existing sr tests for sr api changes in vpp

Signed-off-by: Filip Gschwandtner <8d9a3eb06cdc27e911f7eda75e0d2498e8321f79@pantheon.tech>

ondrej-fabry/vpp-agent,ondrej-fabry/vpp-agent,VladoLavor/vpp-agent,VladoLavor/vpp-agent,VladoLavor/vpp-agent,ondrej-fabry/vpp-agent