closes #2496 and #2552

Update Azure SDK with release v16.2.1
Update Azure autorest SDK with release v10.8.1

Signed-off-by: Yu Wang <yuwa@microsoft.com>

vendor/github.com/Azure/go-autorest/autorest/version.go

@@ -1,23 +1,20 @@
 package autorest
 
-import (
-	"fmt"
-)
-
-const (
-	major        = "7"
-	minor        = "3"
-	patch        = "0"
-	tag          = ""
-	semVerFormat = "%s.%s.%s%s"
-)
-
-var version string
+// Copyright 2017 Microsoft Corporation
+//
+//  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.
 
 // Version returns the semantic version (see http://semver.org).
 func Version() string {
-	if version == "" {
-		version = fmt.Sprintf(semVerFormat, major, minor, patch, tag)
-	}
-	return version
+	return "v10.8.1"
 }