make dotnet pack work

Author: kjnilsson

projects/client/RabbitMQ.Client/RabbitMQ.Client.csproj

@@ -13,9 +13,9 @@
     <AssemblyName>RabbitMQ.Client</AssemblyName>
     <PackageId>RabbitMQ.Client</PackageId>
     <PackageTags>RabbitMQ</PackageTags>
-    <PackageIconUrl>https://en.gravatar.com/userimage/10048884/0ea8846e080980f705da081be53599ce.png?size=100</PackageIconUrl>
+    <PackageIcon>icon.png</PackageIcon>
     <PackageProjectUrl>https://www.rabbitmq.com/dotnet.html</PackageProjectUrl>
-    <PackageLicenseUrl>https://www.rabbitmq.com/dotnet.html</PackageLicenseUrl>
+    <PackageLicense>https://www.rabbitmq.com/dotnet.html</PackageLicense>
     <PackageTargetFallback Condition=" '$(TargetFramework)' == 'netstandard1.5' ">$(PackageTargetFallback);dnxcore50</PackageTargetFallback>
     <GenerateAssemblyTitleAttribute>false</GenerateAssemblyTitleAttribute>
     <GenerateAssemblyDescriptionAttribute>false</GenerateAssemblyDescriptionAttribute>
@@ -30,7 +30,12 @@
     <Compile Remove="build\**\*" />
     <Compile Include="..\..\..\gensrc\autogenerated-api-0-9-1.cs" Exclude="build\**\*;bin\**;obj\**;**\*.xproj;packages\**" />
   </ItemGroup>
-
+<ItemGroup>
+  <None Include="icon.png">
+    <Pack>True</Pack>
+    <PackagePath></PackagePath>
+  </None>
+</ItemGroup>
   <PropertyGroup Condition=" '$(TargetFramework)' == 'netstandard1.5' Or '$(TargetFramework)' == 'netstandard2.0' ">
     <DefineConstants>$(DefineConstants);CORECLR</DefineConstants>
   </PropertyGroup>
@@ -68,7 +73,7 @@
   </ItemGroup>
 
   <ItemGroup>
-    <PackageReference Include="NuGet.Build.Tasks.Pack" Version="4.0.0" PrivateAssets="All" />
+    <PackageReference Include="NuGet.Build.Tasks.Pack" Version="5.4.0" PrivateAssets="All" />
     <PackageReference Include="Microsoft.NETFramework.ReferenceAssemblies" Version="1.0.0" PrivateAssets="All" />
   </ItemGroup>
 
@@ -83,4 +88,4 @@
     </AssemblyAttribute>
   </ItemGroup>
 
-</Project>
+</Project>