Update reflect2 to 1.0.1 (memory utilization fix)

Picking up https://github.com/modern-go/reflect2/pull/2 which lazy
initializes a map of all types which we don't use in k8s, saving
memory & initialization time.

Godeps/Godeps.json

@@ -2407,8 +2407,8 @@
 		},
 		{
 			"ImportPath": "github.com/modern-go/reflect2",
-			"Comment": "1.0.0-9-g05fbef0",
+			"Comment": "v1.0.1",
-			"Rev": "05fbef0ca5da472bbf96c9322b84a53edc03c9fd"
+			"Rev": "94122c33edd36123c84d5368cfb2b69df93a0ec8"
 		},
 		{
 			"ImportPath": "github.com/mohae/deepcopy",

staging/src/k8s.io/api/Godeps/Godeps.json

@@ -44,7 +44,7 @@
 		},
 		{
 			"ImportPath": "github.com/modern-go/reflect2",
-			"Rev": "05fbef0ca5da472bbf96c9322b84a53edc03c9fd"
+			"Rev": "94122c33edd36123c84d5368cfb2b69df93a0ec8"
 		},
 		{
 			"ImportPath": "github.com/pmezard/go-difflib/difflib",

staging/src/k8s.io/apiextensions-apiserver/Godeps/Godeps.json

@@ -572,7 +572,7 @@
 		},
 		{
 			"ImportPath": "github.com/modern-go/reflect2",
-			"Rev": "05fbef0ca5da472bbf96c9322b84a53edc03c9fd"
+			"Rev": "94122c33edd36123c84d5368cfb2b69df93a0ec8"
 		},
 		{
 			"ImportPath": "github.com/pborman/uuid",

staging/src/k8s.io/apimachinery/Godeps/Godeps.json

@@ -100,7 +100,7 @@
 		},
 		{
 			"ImportPath": "github.com/modern-go/reflect2",
-			"Rev": "05fbef0ca5da472bbf96c9322b84a53edc03c9fd"
+			"Rev": "94122c33edd36123c84d5368cfb2b69df93a0ec8"
 		},
 		{
 			"ImportPath": "github.com/mxk/go-flowrate/flowrate",

staging/src/k8s.io/apiserver/Godeps/Godeps.json

@@ -544,7 +544,7 @@
 		},
 		{
 			"ImportPath": "github.com/modern-go/reflect2",
-			"Rev": "05fbef0ca5da472bbf96c9322b84a53edc03c9fd"
+			"Rev": "94122c33edd36123c84d5368cfb2b69df93a0ec8"
 		},
 		{
 			"ImportPath": "github.com/pborman/uuid",

staging/src/k8s.io/cli-runtime/Godeps/Godeps.json

@@ -96,7 +96,7 @@
 		},
 		{
 			"ImportPath": "github.com/modern-go/reflect2",
-			"Rev": "05fbef0ca5da472bbf96c9322b84a53edc03c9fd"
+			"Rev": "94122c33edd36123c84d5368cfb2b69df93a0ec8"
 		},
 		{
 			"ImportPath": "github.com/peterbourgon/diskv",

staging/src/k8s.io/client-go/Godeps/Godeps.json

@@ -168,7 +168,7 @@
 		},
 		{
 			"ImportPath": "github.com/modern-go/reflect2",
-			"Rev": "05fbef0ca5da472bbf96c9322b84a53edc03c9fd"
+			"Rev": "94122c33edd36123c84d5368cfb2b69df93a0ec8"
 		},
 		{
 			"ImportPath": "github.com/peterbourgon/diskv",

staging/src/k8s.io/csi-api/Godeps/Godeps.json

@@ -92,7 +92,7 @@
 		},
 		{
 			"ImportPath": "github.com/modern-go/reflect2",
-			"Rev": "05fbef0ca5da472bbf96c9322b84a53edc03c9fd"
+			"Rev": "94122c33edd36123c84d5368cfb2b69df93a0ec8"
 		},
 		{
 			"ImportPath": "github.com/peterbourgon/diskv",

staging/src/k8s.io/kube-aggregator/Godeps/Godeps.json

@@ -260,7 +260,7 @@
 		},
 		{
 			"ImportPath": "github.com/modern-go/reflect2",
-			"Rev": "05fbef0ca5da472bbf96c9322b84a53edc03c9fd"
+			"Rev": "94122c33edd36123c84d5368cfb2b69df93a0ec8"
 		},
 		{
 			"ImportPath": "github.com/mxk/go-flowrate/flowrate",

staging/src/k8s.io/metrics/Godeps/Godeps.json

@@ -84,7 +84,7 @@
 		},
 		{
 			"ImportPath": "github.com/modern-go/reflect2",
-			"Rev": "05fbef0ca5da472bbf96c9322b84a53edc03c9fd"
+			"Rev": "94122c33edd36123c84d5368cfb2b69df93a0ec8"
 		},
 		{
 			"ImportPath": "github.com/peterbourgon/diskv",

staging/src/k8s.io/sample-apiserver/Godeps/Godeps.json

@@ -252,7 +252,7 @@
 		},
 		{
 			"ImportPath": "github.com/modern-go/reflect2",
-			"Rev": "05fbef0ca5da472bbf96c9322b84a53edc03c9fd"
+			"Rev": "94122c33edd36123c84d5368cfb2b69df93a0ec8"
 		},
 		{
 			"ImportPath": "github.com/pborman/uuid",

staging/src/k8s.io/sample-cli-plugin/Godeps/Godeps.json

@@ -92,7 +92,7 @@
 		},
 		{
 			"ImportPath": "github.com/modern-go/reflect2",
-			"Rev": "05fbef0ca5da472bbf96c9322b84a53edc03c9fd"
+			"Rev": "94122c33edd36123c84d5368cfb2b69df93a0ec8"
 		},
 		{
 			"ImportPath": "github.com/peterbourgon/diskv",

staging/src/k8s.io/sample-controller/Godeps/Godeps.json

@@ -100,7 +100,7 @@
 		},
 		{
 			"ImportPath": "github.com/modern-go/reflect2",
-			"Rev": "05fbef0ca5da472bbf96c9322b84a53edc03c9fd"
+			"Rev": "94122c33edd36123c84d5368cfb2b69df93a0ec8"
 		},
 		{
 			"ImportPath": "github.com/peterbourgon/diskv",

vendor/github.com/modern-go/reflect2/.travis.yml

@@ -6,6 +6,7 @@ go:
 
 before_install:
   - go get -t -v ./...
+  - go get -t -v github.com/modern-go/reflect2-tests/...
 
 script:
   - ./test.sh

vendor/github.com/modern-go/reflect2/Gopkg.toml

@@ -24,7 +24,7 @@
 #   go-tests = true
 #   unused-packages = true
 
-ignored = ["github.com/modern-go/test","github.com/modern-go/test/must","github.com/modern-go/test/should"]
+ignored = []
 
 [[constraint]]
   name = "github.com/modern-go/concurrent"

vendor/github.com/modern-go/reflect2/reflect2.go

@@ -150,6 +150,9 @@ func (cfg *frozenConfig) TypeOf(obj interface{}) Type {
 }
 
 func (cfg *frozenConfig) Type2(type1 reflect.Type) Type {
+	if type1 == nil {
+		return nil
+	}
 	cacheKey := uintptr(unpackEFace(type1).data)
 	typeObj, found := cfg.cache.Load(cacheKey)
 	if found {

vendor/github.com/modern-go/reflect2/test.sh

@@ -3,7 +3,7 @@
 set -e
 echo "" > coverage.txt
 
-for d in $(go list ./... | grep -v vendor); do
+for d in $(go list github.com/modern-go/reflect2-tests/... | grep -v vendor); do
     go test -coverprofile=profile.out -coverpkg=github.com/modern-go/reflect2 $d
     if [ -f profile.out ]; then
         cat profile.out >> coverage.txt

vendor/github.com/modern-go/reflect2/type_map.go

@@ -4,6 +4,7 @@ import (
 	"reflect"
 	"runtime"
 	"strings"
+	"sync"
 	"unsafe"
 )
 
@@ -15,10 +16,17 @@ func typelinks1() [][]unsafe.Pointer
 //go:linkname typelinks2 reflect.typelinks
 func typelinks2() (sections []unsafe.Pointer, offset [][]int32)
 
-var types = map[string]reflect.Type{}
+// initOnce guards initialization of types and packages
-var packages = map[string]map[string]reflect.Type{}
+var initOnce sync.Once
+
+var types map[string]reflect.Type
+var packages map[string]map[string]reflect.Type
+
+// discoverTypes initializes types and packages
+func discoverTypes() {
+	types = make(map[string]reflect.Type)
+	packages = make(map[string]map[string]reflect.Type)
 
-func init() {
 	ver := runtime.Version()
 	if ver == "go1.5" || strings.HasPrefix(ver, "go1.5.") {
 		loadGo15Types()
@@ -90,11 +98,13 @@ type emptyInterface struct {
 
 // TypeByName return the type by its name, just like Class.forName in java
 func TypeByName(typeName string) Type {
+	initOnce.Do(discoverTypes)
 	return Type2(types[typeName])
 }
 
 // TypeByPackageName return the type by its package and name
 func TypeByPackageName(pkgPath string, name string) Type {
+	initOnce.Do(discoverTypes)
 	pkgTypes := packages[pkgPath]
 	if pkgTypes == nil {
 		return nil