vendor: update docker/go-metrics v0.0.1

Signed-off-by: Sebastiaan van Stijn <github@gone.nl>

vendor/github.com/prometheus/procfs/proc_ns.go

@@ -1,3 +1,16 @@
+// Copyright 2018 The Prometheus Authors
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
 package procfs
 
 import (
@@ -16,9 +29,9 @@ type Namespace struct {
 // Namespaces contains all of the namespaces that the process is contained in.
 type Namespaces map[string]Namespace
 
-// NewNamespaces reads from /proc/[pid/ns/* to get the namespaces of which the
+// Namespaces reads from /proc/<pid>/ns/* to get the namespaces of which the
 // process is a member.
-func (p Proc) NewNamespaces() (Namespaces, error) {
+func (p Proc) Namespaces() (Namespaces, error) {
 	d, err := os.Open(p.path("ns"))
 	if err != nil {
 		return nil, err