vendor.conf: pin branches to releases or commits

Most of the dependencies have been copied from libpod's vendor.conf
where such a cleanup has been executed recently.

Signed-off-by: Valentin Rothberg <rothberg@redhat.com>

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

@@ -1,55 +0,0 @@
-package procfs
-
-import (
-	"fmt"
-	"os"
-	"strconv"
-	"strings"
-)
-
-// Namespace represents a single namespace of a process.
-type Namespace struct {
-	Type  string // Namespace type.
-	Inode uint32 // Inode number of the namespace. If two processes are in the same namespace their inodes will match.
-}
-
-// 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
-// process is a member.
-func (p Proc) NewNamespaces() (Namespaces, error) {
-	d, err := os.Open(p.path("ns"))
-	if err != nil {
-		return nil, err
-	}
-	defer d.Close()
-
-	names, err := d.Readdirnames(-1)
-	if err != nil {
-		return nil, fmt.Errorf("failed to read contents of ns dir: %v", err)
-	}
-
-	ns := make(Namespaces, len(names))
-	for _, name := range names {
-		target, err := os.Readlink(p.path("ns", name))
-		if err != nil {
-			return nil, err
-		}
-
-		fields := strings.SplitN(target, ":", 2)
-		if len(fields) != 2 {
-			return nil, fmt.Errorf("failed to parse namespace type and inode from '%v'", target)
-		}
-
-		typ := fields[0]
-		inode, err := strconv.ParseUint(strings.Trim(fields[1], "[]"), 10, 32)
-		if err != nil {
-			return nil, fmt.Errorf("failed to parse inode from '%v': %v", fields[1], err)
-		}
-
-		ns[name] = Namespace{typ, uint32(inode)}
-	}
-
-	return ns, nil
-}