[AppServie]:Azure .Net SDK update for PowerShell (#11442)

* Azure .Net SDK update for PowerShell

* Added _metadata file

* Generated using latest version of AutoRest

Author: Kotasudhakarreddy

eng/mgmt/mgmtmetadata/web_resource-manager.txt

@@ -0,0 +1,14 @@
+Installing AutoRest version: v2
+AutoRest installed successfully.
+Commencing code generation
+Generating CSharp code
+Executing AutoRest command
+cmd.exe /c autorest.cmd https://github.com/Azure/azure-rest-api-specs/blob/master/specification/web/resource-manager/readme.md --csharp --version=v2 --reflect-api-versions --csharp-sdks-folder=K:\DotNet-SDK\latest\azure-sdk-for-net\sdk
+2020-04-21 08:47:41 UTC
+Azure-rest-api-specs repository information
+GitHub fork: Azure
+Branch:      master
+Commit:      7fdcacc0b1bec9942938067b2594ec5447041050
+AutoRest information
+Requested version: v2
+Bootstrapper version:    [email protected]

sdk/websites/Microsoft.Azure.Management.WebSites/AzSdk.RP.props

@@ -1,7 +1,7 @@
 <Project ToolsVersion="15.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <!--This file and it's contents are updated at build time moving or editing might result in build failure. Take due deligence while editing this file-->
   <PropertyGroup>
-    <AzureApiTag>CertificateRegistration_2018-02-01;DomainRegistration_2018-02-01;Web_2018-02-01;Web_2018-11-01;WebSiteManagementClient_2018-02-01;</AzureApiTag>
+    <AzureApiTag>CertificateRegistration_2019-08-01;DomainRegistration_2019-08-01;Web_2019-08-01;Web_2019-08-01;WebSiteManagementClient_2019-08-01;</AzureApiTag>
     <PackageTags>$(PackageTags);$(CommonTags);$(AzureApiTag);</PackageTags>
   </PropertyGroup>
 </Project>