Makefile: add target for checking Prometheus rules (#1126)
Makefile: add target for checking Prometheus rules (#1126)

Signed-off-by: Kazumasa Kohtaka <5510fb4cf2f58b33ef209d6c06de6125fbf2a34e@gmail.com>
prometheus/node_exporter,derekmarcotte/node_exporter,siavashs/node_exporter,prometheus/node_exporter,siavashs/node_exporter,derekmarcotte/node_exporter,derekmarcotte/node_exporter,derekmarcotte/node_exporter,prometheus/node_exporter,siavashs/node_exporter,siavashs/node_exporter