switch to go-kit/log (#1575)

Signed-off-by: yeya24 <yb532204897@gmail.com>

collector/cpu_openbsd.go

@@ -19,6 +19,7 @@ import (
 	"strconv"
 	"unsafe"
 
+	"github.com/go-kit/kit/log"
 	"github.com/prometheus/client_golang/prometheus"
 	"golang.org/x/sys/unix"
 )
@@ -30,16 +31,18 @@ import (
 import "C"
 
 type cpuCollector struct {
-	cpu typedDesc
+	cpu    typedDesc
+	logger log.Logger
 }
 
 func init() {
 	registerCollector("cpu", defaultEnabled, NewCPUCollector)
 }
 
-func NewCPUCollector() (Collector, error) {
+func NewCPUCollector(logger log.Logger) (Collector, error) {
 	return &cpuCollector{
-		cpu: typedDesc{nodeCPUSecondsDesc, prometheus.CounterValue},
+		cpu:    typedDesc{nodeCPUSecondsDesc, prometheus.CounterValue},
+		logger: logger,
 	}, nil
 }