[VOL-5486] Fix deprecated versions

Change-Id: I3e03ea246020547ae75fa92ce8cf5cbba7e8f3bb
Signed-off-by: Abhay Kumar <abhay.kumar@radisys.com>
diff --git a/vendor/github.com/prometheus/procfs/proc_cgroup.go b/vendor/github.com/prometheus/procfs/proc_cgroup.go
index 0094a13..4a64347 100644
--- a/vendor/github.com/prometheus/procfs/proc_cgroup.go
+++ b/vendor/github.com/prometheus/procfs/proc_cgroup.go
@@ -23,8 +23,8 @@
 	"github.com/prometheus/procfs/internal/util"
 )
 
-// Cgroup models one line from /proc/[pid]/cgroup. Each Cgroup struct describes the the placement of a PID inside a
-// specific control hierarchy. The kernel has two cgroup APIs, v1 and v2. v1 has one hierarchy per available resource
+// Cgroup models one line from /proc/[pid]/cgroup. Each Cgroup struct describes the placement of a PID inside a
+// specific control hierarchy. The kernel has two cgroup APIs, v1 and v2. The v1 has one hierarchy per available resource
 // controller, while v2 has one unified hierarchy shared by all controllers. Regardless of v1 or v2, all hierarchies
 // contain all running processes, so the question answerable with a Cgroup struct is 'where is this process in
 // this hierarchy' (where==what path on the specific cgroupfs). By prefixing this path with the mount point of
@@ -45,13 +45,13 @@
 }
 
 // parseCgroupString parses each line of the /proc/[pid]/cgroup file
-// Line format is hierarchyID:[controller1,controller2]:path
+// Line format is hierarchyID:[controller1,controller2]:path.
 func parseCgroupString(cgroupStr string) (*Cgroup, error) {
 	var err error
 
 	fields := strings.SplitN(cgroupStr, ":", 3)
 	if len(fields) < 3 {
-		return nil, fmt.Errorf("at least 3 fields required, found %d fields in cgroup string: %s", len(fields), cgroupStr)
+		return nil, fmt.Errorf("%w: 3+ fields required, found %d fields in cgroup string: %s", ErrFileParse, len(fields), cgroupStr)
 	}
 
 	cgroup := &Cgroup{
@@ -60,7 +60,7 @@
 	}
 	cgroup.HierarchyID, err = strconv.Atoi(fields[0])
 	if err != nil {
-		return nil, fmt.Errorf("failed to parse hierarchy ID")
+		return nil, fmt.Errorf("%w: hierarchy ID: %q", ErrFileParse, cgroup.HierarchyID)
 	}
 	if fields[1] != "" {
 		ssNames := strings.Split(fields[1], ",")
@@ -69,7 +69,7 @@
 	return cgroup, nil
 }
 
-// parseCgroups reads each line of the /proc/[pid]/cgroup file
+// parseCgroups reads each line of the /proc/[pid]/cgroup file.
 func parseCgroups(data []byte) ([]Cgroup, error) {
 	var cgroups []Cgroup
 	scanner := bufio.NewScanner(bytes.NewReader(data))
@@ -88,9 +88,9 @@
 
 // Cgroups reads from /proc/<pid>/cgroups and returns a []*Cgroup struct locating this PID in each process
 // control hierarchy running on this system. On every system (v1 and v2), all hierarchies contain all processes,
-// so the len of the returned struct is equal to the number of active hierarchies on this system
+// so the len of the returned struct is equal to the number of active hierarchies on this system.
 func (p Proc) Cgroups() ([]Cgroup, error) {
-	data, err := util.ReadFileNoStat(fmt.Sprintf("/proc/%d/cgroup", p.PID))
+	data, err := util.ReadFileNoStat(p.path("cgroup"))
 	if err != nil {
 		return nil, err
 	}