Add process metrics of weed itself

go.mod

@@ -33,7 +33,7 @@ require (
 	github.com/gocql/gocql v0.0.0-20190829130954-e163eff7a8c6
 	github.com/gogo/protobuf v1.2.2-0.20190730201129-28a6bbf47e48 // indirect
 	github.com/golang/groupcache v0.0.0-20200121045136-8c9f03a8e57e
-	github.com/golang/protobuf v1.4.2
+	github.com/golang/protobuf v1.4.3
 	github.com/google/btree v1.0.0
 	github.com/google/uuid v1.1.1
 	github.com/gorilla/mux v1.7.4
@@ -42,7 +42,7 @@ require (
 	github.com/grpc-ecosystem/grpc-gateway v1.11.0 // indirect
 	github.com/jcmturner/gofork v1.0.0 // indirect
 	github.com/jinzhu/copier v0.2.8
-	github.com/json-iterator/go v1.1.10
+	github.com/json-iterator/go v1.1.11
 	github.com/karlseguin/ccache v2.0.3+incompatible // indirect
 	github.com/karlseguin/ccache/v2 v2.0.7
 	github.com/klauspost/compress v1.10.9 // indirect
@@ -59,7 +59,7 @@ require (
 	github.com/peterh/liner v1.1.0
 	github.com/pierrec/lz4 v2.2.7+incompatible // indirect
 	github.com/pquerna/cachecontrol v0.1.0
-	github.com/prometheus/client_golang v1.3.0
+	github.com/prometheus/client_golang v1.11.0
 	github.com/rcrowley/go-metrics v0.0.0-20190826022208-cac0b30c2563 // indirect
 	github.com/seaweedfs/fuse v1.1.7
 	github.com/seaweedfs/goexif v1.0.2
@@ -88,11 +88,11 @@ require (
 	gocloud.dev/pubsub/rabbitpubsub v0.20.0
 	golang.org/x/image v0.0.0-20200119044424-58c23975cae1 // indirect
 	golang.org/x/net v0.0.0-20201202161906-c7110b5ffcbb
-	golang.org/x/sys v0.0.0-20210124154548-22da62e12c0c
+	golang.org/x/sys v0.0.0-20210603081109-ebe580a85c40
 	golang.org/x/tools v0.0.0-20201124115921-2c860bdd6e78
 	google.golang.org/api v0.26.0
 	google.golang.org/grpc v1.29.1
-	google.golang.org/protobuf v1.24.0
+	google.golang.org/protobuf v1.26.0-rc.1
 	gopkg.in/check.v1 v1.0.0-20190902080502-41f04d3bba15 // indirect
 	gopkg.in/jcmturner/goidentity.v3 v3.0.0 // indirect
 	gopkg.in/jcmturner/gokrb5.v7 v7.3.0 // indirect