vendor: Update vendoring for the exec client and server implementations

Signed-off-by: Jacek J. Łakis <jacek.lakis@intel.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>

vendor/cloud.google.com/go/internal/optional/optional_test.go

@@ -0,0 +1,64 @@
+// Copyright 2016 Google Inc. All Rights Reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package optional
+
+import "testing"
+
+func TestConvertSuccess(t *testing.T) {
+	if got, want := ToBool(false), false; got != want {
+		t.Errorf("got %v, want %v", got, want)
+	}
+	if got, want := ToString(""), ""; got != want {
+		t.Errorf("got %v, want %v", got, want)
+	}
+	if got, want := ToInt(0), 0; got != want {
+		t.Errorf("got %v, want %v", got, want)
+	}
+	if got, want := ToUint(uint(0)), uint(0); got != want {
+		t.Errorf("got %v, want %v", got, want)
+	}
+	if got, want := ToFloat64(0.0), 0.0; got != want {
+		t.Errorf("got %v, want %v", got, want)
+	}
+}
+
+func TestConvertFailure(t *testing.T) {
+	for _, f := range []func(){
+		func() { ToBool(nil) },
+		func() { ToBool(3) },
+		func() { ToString(nil) },
+		func() { ToString(3) },
+		func() { ToInt(nil) },
+		func() { ToInt("") },
+		func() { ToUint(nil) },
+		func() { ToUint("") },
+		func() { ToFloat64(nil) },
+		func() { ToFloat64("") },
+	} {
+		if !panics(f) {
+			t.Error("got no panic, want panic")
+		}
+	}
+}
+
+func panics(f func()) (b bool) {
+	defer func() {
+		if recover() != nil {
+			b = true
+		}
+	}()
+	f()
+	return false
+}