APIM SDK changes for the Spec update of version 2020-12-01 (#21001)

* generate code with new spec

* squash

* fix test fails

* deleted service test record

* update metadata file

* fix typo

* remove extra quote

* fix generated code

Co-authored-by: Kacie Kang <jikang@microsoft.com>
Co-authored-by: Samir Solanki <samirsolanki@outlook.com>

eng/mgmt/mgmtmetadata/apimanagement_resource-manager.txt

@@ -1,11 +1,14 @@
-2020-02-11 05:53:16 UTC
-
-1) azure-rest-api-specs repository information
-GitHub user: Azure
+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/apimanagement/resource-manager/readme.md --csharp --version="2.0.4417" --reflect-api-versions --tag=package-2020-12 --csharp-sdks-folder=C:\azure-sdk-for-net\sdk
+2021-05-21 07:03:54 UTC
+Azure-rest-api-specs repository information
+GitHub fork: Azure
 Branch:      master
-Commit:      26bdb0c40d9403e07980e41f054ec75f72225d52
-
-2) AutoRest information
-Requested version: latest
-Bootstrapper version:    C:\Users\sasolank\AppData\Roaming\npm `-- autorest@2.0.4413  
-Latest installed version:    
+Commit:      5047dfdf585969892ac035ffdfbc57623f0bf1c5
+AutoRest information
+Requested version: v2
+Bootstrapper version:    autorest@2.0.4417

sdk/apimanagement/Microsoft.Azure.Management.ApiManagement/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>ApiManagement_2019-12-01;</AzureApiTag>
+    <AzureApiTag>ApiManagement_2020-12-01;</AzureApiTag>
     <PackageTags>$(PackageTags);$(CommonTags);$(AzureApiTag);</PackageTags>
   </PropertyGroup>
 </Project>

sdk/apimanagement/Microsoft.Azure.Management.ApiManagement/CHANGELOG.md

@@ -1,8 +1,11 @@
 ## Microsoft.Azure.Management.ApiManagment release notes
 
-### Changes in 6.0.0-preview
+### Changes in 7.0.0-preview
 
-- Fixed `quotas` update contract
+- Switch the .NET client to use api-version `2020-12-01`
+- new entities added, are `ContentType`, `ContentItem`, `DeletedServices`, `GatewayCertificateAuthority`, `PortalRevision`, `PortalSettings`, `TenantSettings`, `ApiManagementSkus`.
+- Added support for creating Azure KeyVault based `namedValues`, which allows auto rotation of this Entity. blocked POST operations to get entity secret from it due to Security Issue.
+- Added support for creating Azure KeyVault based `certificates`, which allows auto rotation of this Entity.
 
 ### Changes in 5.0.0-preview