update procfs to v0.0.5

- Fixes (prometheus#1465) failure in netclass collector
- Adds parsing of CPU information

Signed-off-by: Paul Gier <pgier@redhat.com>

go.mod

@@ -16,7 +16,7 @@ require (
 	github.com/prometheus/client_golang v1.0.0
 	github.com/prometheus/client_model v0.0.0-20190129233127-fd36f4220a90
 	github.com/prometheus/common v0.4.1
-	github.com/prometheus/procfs v0.0.4
+	github.com/prometheus/procfs v0.0.5
 	github.com/siebenmann/go-kstat v0.0.0-20160321171754-d34789b79745
 	github.com/sirupsen/logrus v1.4.2 // indirect
 	github.com/soundcloud/go-runit v0.0.0-20150630195641-06ad41a06c4a

go.sum

@@ -75,8 +75,8 @@ github.com/prometheus/common v0.4.1/go.mod h1:TNfzLD0ON7rHzMJeJkieUDPYmFC7Snx/y8
 github.com/prometheus/procfs v0.0.0-20181005140218-185b4288413d/go.mod h1:c3At6R/oaqEKCNdg8wHV1ftS6bRYblBhIjjI8uT2IGk=
 github.com/prometheus/procfs v0.0.2 h1:6LJUbpNm42llc4HRCuvApCSWB/WfhuNo9K98Q9sNGfs=
 github.com/prometheus/procfs v0.0.2/go.mod h1:TjEm7ze935MbeOT/UhFTIMYKhuLP4wbCsTZCD3I8kEA=
-github.com/prometheus/procfs v0.0.4 h1:w8DjqFMJDjuVwdZBQoOozr4MVWOnwF7RcL/7uxBjY78=
-github.com/prometheus/procfs v0.0.4/go.mod h1:4A/X28fw3Fc593LaREMrKMqOKvUAntwMDaekg4FpcdQ=
+github.com/prometheus/procfs v0.0.5 h1:3+auTFlqw+ZaQYJARz6ArODtkaIwtvBTx3N2NehQlL8=
+github.com/prometheus/procfs v0.0.5/go.mod h1:4A/X28fw3Fc593LaREMrKMqOKvUAntwMDaekg4FpcdQ=
 github.com/prometheus/promu v0.2.0 h1:QKoCatPW0XeOG/9ghBv4qESc4G74NHCzuIzsm6SLVt4=
 github.com/prometheus/promu v0.2.0/go.mod h1:7vT+16au8n5E4UrtokdU7btmuJ1bF9df9F9s79Cgs3E=
 github.com/siebenmann/go-kstat v0.0.0-20160321171754-d34789b79745 h1:IuH7WumZNax0D+rEqmy2TyhKCzrtMGqbZO0b8rO00JA=