+semver: upgrade to net5.0 (#1390)

* breaking upgrade base build image to net5.0

* add make and build tools to image

* fix code broken after net5.0 upgrade

* fix warnings

* fix tests and line endings

* upgrade dotnet test and coverages packages

* update circle build image

* removed rafty and updated more packages

* bring back develop

* rename authorisation to authorization

test/Ocelot.Benchmarks/Ocelot.Benchmarks.csproj

@@ -2,7 +2,7 @@
 
   <PropertyGroup>
     <VersionPrefix>0.0.0-dev</VersionPrefix>
-    <TargetFramework>netcoreapp3.1</TargetFramework>
+    <TargetFramework>net5.0</TargetFramework>
     <AssemblyName>Ocelot.Benchmarks</AssemblyName>
     <OutputType>Exe</OutputType>
     <PackageId>Ocelot.Benchmarks</PackageId>
@@ -18,7 +18,7 @@
   </ItemGroup>
 
   <ItemGroup>
-    <PackageReference Include="BenchmarkDotNet" Version="0.12.0" />
+    <PackageReference Include="BenchmarkDotNet" Version="0.12.1" />
     <PackageReference Include="StyleCop.Analyzers" Version="1.2.0-beta.164">
       <PrivateAssets>all</PrivateAssets>
     </PackageReference>
@@ -27,4 +27,4 @@
   <ItemGroup>
     <PackageReference Update="Microsoft.SourceLink.GitHub" Version="1.0.0" />
   </ItemGroup>
-</Project>
+</Project>