Switch elastic/procfs to prometheus/procfs

All changes have been merged upstream.

NOTICE.txt

@@ -401,23 +401,6 @@ This product includes a number of subcomponents with
 separate copyright notices and license terms. Your use of these
 subcomponents is subject to the terms and conditions of the 
 subcomponent's license, as noted in the LICENSE file.
---------------------------------------------------------------------
-Dependency: github.com/elastic/procfs
-Revision: 664e6bc79eb43c956507b6e20a867140516ad15a
-License type (autodetected): Apache-2.0
-./vendor/github.com/elastic/procfs/LICENSE:
---------------------------------------------------------------------
-Apache License 2.0
-
--------NOTICE-----
-procfs provides functions to retrieve system, kernel and process
-metrics from the pseudo-filesystem proc.
-
-Copyright 2014-2015 The Prometheus Authors
-
-This product includes software developed at
-SoundCloud Ltd. (http://soundcloud.com/).
-
 --------------------------------------------------------------------
 Dependency: github.com/ericchiang/k8s
 Version: v1.0.0
@@ -2756,6 +2739,23 @@ Copyright 2015 The Prometheus Authors
 This product includes software developed at
 SoundCloud Ltd. (http://soundcloud.com/).
 
+--------------------------------------------------------------------
+Dependency: github.com/prometheus/procfs
+Revision: 54d17b57dd7d4a3aa092476596b3f8a933bde349
+License type (autodetected): Apache-2.0
+./vendor/github.com/prometheus/procfs/LICENSE:
+--------------------------------------------------------------------
+Apache License 2.0
+
+-------NOTICE-----
+procfs provides functions to retrieve system, kernel and process
+metrics from the pseudo-filesystem proc.
+
+Copyright 2014-2015 The Prometheus Authors
+
+This product includes software developed at
+SoundCloud Ltd. (http://soundcloud.com/).
+
 --------------------------------------------------------------------
 Dependency: github.com/rcrowley/go-metrics
 Revision: 1f30fe9094a513ce4c700b9a54458bbb0c96996c

auditbeat/module/auditd/audit_linux_test.go

@@ -12,12 +12,13 @@ import (
 
 	"github.com/stretchr/testify/assert"
 
+	"github.com/prometheus/procfs"
+
 	"github.com/elastic/beats/auditbeat/core"
 	"github.com/elastic/beats/libbeat/logp"
 	mbtest "github.com/elastic/beats/metricbeat/mb/testing"
 	"github.com/elastic/go-libaudit"
 	"github.com/elastic/go-libaudit/auparse"
-	"github.com/elastic/procfs"
 )
 
 // Specify the -audit flag when running these tests to interact with the real

metricbeat/module/system/raid/raid.go

@@ -3,14 +3,14 @@ package raid
 import (
 	"path/filepath"
 
+	"github.com/pkg/errors"
+	"github.com/prometheus/procfs"
+
 	"github.com/elastic/beats/libbeat/common"
 	"github.com/elastic/beats/libbeat/common/cfgwarn"
 	"github.com/elastic/beats/metricbeat/mb"
 	"github.com/elastic/beats/metricbeat/mb/parse"
 	"github.com/elastic/beats/metricbeat/module/system"
-	"github.com/elastic/procfs"
-
-	"github.com/pkg/errors"
 )
 
 func init() {

metricbeat/module/system/socket/ptable.go

@@ -6,8 +6,7 @@ import (
 	"strings"
 
 	"github.com/joeshaw/multierror"
-
-	"github.com/elastic/procfs"
+	"github.com/prometheus/procfs"
 )
 
 // process tools