Update "AutoRest.CSharp.V3" package name to "AutoRest.CSharp" (Azure#17638)

Update "AutoRest.CSharp.V3" package name to "AutoRest.CSharp"

Author: ShivangiReja

eng/Directory.Build.Data.targets

@@ -52,7 +52,7 @@
 
   <!-- Add Client SDK Tools -->
   <ItemGroup>
-    <PackageReference Condition="'$(IsClientLibrary)' == 'true'" Include="AutoRest.CSharp.V3" PrivateAssets="All" />
+    <PackageReference Condition="'$(IsClientLibrary)' == 'true'" Include="AutoRest.CSharp" PrivateAssets="All" />
 
     <PackageReference Condition="'$(GenerateAPIListing)' == 'true'" Include="Microsoft.DotNet.GenAPI" PrivateAssets="All" />
 

eng/Packages.Data.props

@@ -120,7 +120,7 @@
     All should have PrivateAssets="All" set so they don't become pacakge dependencies
   -->
   <ItemGroup>
-    <PackageReference Update="AutoRest.CSharp.V3" Version="3.0.0-beta.20201217.1" PrivateAssets="All" />
+    <PackageReference Update="AutoRest.CSharp" Version="3.0.0-beta.20201217.2" PrivateAssets="All" />
     <PackageReference Update="Azure.ClientSdk.Analyzers" Version="0.1.1-dev.20200929.2" PrivateAssets="All" />
     <PackageReference Update="coverlet.collector" Version="1.3.0" PrivateAssets="All" />
     <PackageReference Update="Microsoft.CodeAnalysis.FxCopAnalyzers" Version="3.3.1" PrivateAssets="All" />

sdk/keyvault/samples/sharelink/ShareLink.csproj

@@ -24,7 +24,7 @@
   </ItemGroup>
 
   <ItemGroup Condition="'$(IsSample)' == 'true'">
-    <PackageReference Include="AutoRest.CSharp.V3" PrivateAssets="All" />
+    <PackageReference Include="AutoRest.CSharp" PrivateAssets="All" />
   </ItemGroup>
 
   <Import Project="$(MSBuildThisFileDirectory)..\..\..\..\eng\Packages.Data.props" Condition="'$(IsSample)' == 'true'" />