switch to go-kit/log (#1575)

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

collector/boot_time_solaris.go

@@ -17,19 +17,21 @@
 package collector
 
 import (
+	"github.com/go-kit/kit/log"
 	"github.com/prometheus/client_golang/prometheus"
 	"github.com/siebenmann/go-kstat"
 )
 
 type bootTimeCollector struct {
 	boottime typedDesc
+	logger   log.Logger
 }
 
 func init() {
 	registerCollector("boottime", defaultEnabled, newBootTimeCollector)
 }
 
-func newBootTimeCollector() (Collector, error) {
+func newBootTimeCollector(logger log.Logger) (Collector, error) {
 	return &bootTimeCollector{
 		boottime: typedDesc{
 			prometheus.NewDesc(
@@ -37,6 +39,7 @@ func newBootTimeCollector() (Collector, error) {
 				"Unix time of last boot, including microseconds.",
 				nil, nil,
 			), prometheus.GaugeValue},
+		logger: logger,
 	}, nil
 }