upgrade promu to v0.3.0 (#1272)
upgrade promu to v0.3.0 (#1272)

Signed-off-by: Paul Gier <02c55f18a892b365bcd1802db9e5c9df39c04674@redhat.com>
derekmarcotte/node_exporter,derekmarcotte/node_exporter,siavashs/node_exporter,derekmarcotte/node_exporter,siavashs/node_exporter,siavashs/node_exporter,prometheus/node_exporter,derekmarcotte/node_exporter,prometheus/node_exporter,siavashs/node_exporter,prometheus/node_exporter