Fix duplicate proto error in kubectl 1.8.0-alpha.

- Remove vendor'ed package go.pedge.io/pb/go/google/protobuf.
- Update vendor'ed package github.com/libopenstorage/openstorage.

vendor/github.com/libopenstorage/openstorage/pkg/parser/BUILD

@@ -0,0 +1,21 @@
+load("@io_bazel_rules_go//go:def.bzl", "go_library")
+
+go_library(
+    name = "go_default_library",
+    srcs = ["labels.go"],
+    visibility = ["//visibility:public"],
+)
+
+filegroup(
+    name = "package-srcs",
+    srcs = glob(["**"]),
+    tags = ["automanaged"],
+    visibility = ["//visibility:private"],
+)
+
+filegroup(
+    name = "all-srcs",
+    srcs = [":package-srcs"],
+    tags = ["automanaged"],
+    visibility = ["//visibility:public"],
+)

vendor/github.com/libopenstorage/openstorage/pkg/parser/labels.go

@@ -0,0 +1,74 @@
+package parser
+
+import (
+	"fmt"
+	"strings"
+)
+
+const (
+	NoLabel = "NoLabel"
+)
+
+func LabelsFromString(str string) (map[string]string, error) {
+	if len(str) == 0 {
+		return nil, nil
+	}
+	labels := strings.Split(str, ",")
+	m := make(map[string]string, len(labels))
+	for _, v := range labels {
+		if strings.Contains(v, "=") {
+			label := strings.SplitN(v, "=", 2)
+			if len(label) != 2 {
+				return m, fmt.Errorf("Malformed label: %s", v)
+			}
+			if _, ok := m[label[0]]; ok {
+				return m, fmt.Errorf("Duplicate label: %s", v)
+			}
+			m[label[0]] = label[1]
+		} else if len(v) != 0 {
+			m[v] = ""
+		}
+	}
+	return m, nil
+}
+
+func LabelsToString(labels map[string]string) string {
+	l := ""
+	for k, v := range labels {
+		if len(l) != 0 {
+			l += ","
+		}
+		if len(v) != 0 {
+			l += k + "=" + v
+		} else if len(k) != 0 {
+			l += k
+		}
+	}
+	return l
+}
+
+func MergeLabels(old map[string]string, new map[string]string) map[string]string {
+	if old == nil {
+		return new
+	}
+	if new == nil {
+		return old
+	}
+	m := make(map[string]string, len(old)+len(new))
+	for k, v := range old {
+		m[k] = v
+	}
+	for k, v := range new {
+		m[k] = v
+	}
+	return m
+}
+
+func HasLabels(set map[string]string, subset map[string]string) bool {
+	for k, v1 := range subset {
+		if v2, ok := set[k]; !ok || v1 != v2 {
+			return false
+		}
+	}
+	return true
+}

vendor/github.com/libopenstorage/openstorage/pkg/units/units.go

@@ -40,16 +40,16 @@ var (
 		"B": 1,
 		"b": 1,
 
-		"KB": KB,
-		"kb": KB,
-		"MB": MB,
-		"mb": MB,
-		"GB": GB,
-		"gb": GB,
-		"TB": TB,
-		"tb": TB,
-		"PB": PB,
-		"pb": PB,
+		"KB": KiB,
+		"kb": KiB,
+		"MB": MiB,
+		"mb": MiB,
+		"GB": GiB,
+		"gb": GiB,
+		"TB": TiB,
+		"tb": TiB,
+		"PB": PiB,
+		"pb": PiB,
 
 		"K": KiB,
 		"k": KiB,