sFlow modularization
sFlow modularization

TG-912
Tags: fix, dev
Moving sflow_ovsdb_init() from ops-cli to ops-switchd

Change-Id: I2edf17d20224499aa58233d472545fd9f098fae6
Signed-off-by: noorinshaikh <9e6eb93345483ff6b8f82e2e6a8e1ba4d92e274c@hpe.com>

open-switch/ops-switchd,open-switch/ops-switchd,open-switch/ops-switchd