build: import GetPersistentVolumeClass from component-helpers

Signed-off-by: Yonatan Kahana <yonatankahana.il@gmail.com>

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

@@ -127,7 +127,10 @@ func (p Proc) Stat() (ProcStat, error) {
 	)
 
 	if l < 0 || r < 0 {
-		return ProcStat{}, fmt.Errorf("unexpected format, couldn't extract comm %q", data)
+		return ProcStat{}, fmt.Errorf(
+			"unexpected format, couldn't extract comm: %s",
+			data,
+		)
 	}
 
 	s.Comm = string(data[l+1 : r])