Add notice and license header

NOTICE.txt

@@ -435,11 +435,11 @@ Contents of probable licence file $GOMODCACHE/cloud.google.com/go/[email protected]
 
 --------------------------------------------------------------------------------
 Dependency : github.com/Azure/azure-sdk-for-go/sdk/azcore
-Version: v1.7.1
+Version: v1.8.0-beta.3
 Licence type (autodetected): MIT
 --------------------------------------------------------------------------------
 
-Contents of probable licence file $GOMODCACHE/github.com/!azure/azure-sdk-for-go/sdk/azcore@v1.7.1/LICENSE.txt:
+Contents of probable licence file $GOMODCACHE/github.com/!azure/azure-sdk-for-go/sdk/azcore@v1.8.0-beta.3/LICENSE.txt:
 
 MIT License
 
@@ -497,11 +497,11 @@ SOFTWARE
 
 --------------------------------------------------------------------------------
 Dependency : github.com/Azure/azure-sdk-for-go/sdk/resourcemanager/compute/armcompute/v5
-Version: v5.1.0
+Version: v5.2.0-beta.1
 Licence type (autodetected): MIT
 --------------------------------------------------------------------------------
 
-Contents of probable licence file $GOMODCACHE/github.com/!azure/azure-sdk-for-go/sdk/resourcemanager/compute/armcompute/v5@v5.1.0/LICENSE.txt:
+Contents of probable licence file $GOMODCACHE/github.com/!azure/azure-sdk-for-go/sdk/resourcemanager/compute/armcompute/v5@v5.2.0-beta.1/LICENSE.txt:
 
 MIT License
 

input/azure/vm_test.go

@@ -1,3 +1,20 @@
+// Licensed to Elasticsearch B.V. under one or more contributor
+// license agreements. See the NOTICE file distributed with
+// this work for additional information regarding copyright
+// ownership. Elasticsearch B.V. licenses this file to you 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 azure
 
 import (