Workaround for github actions

Author: macsux

.github/workflows/dotnet.yaml

@@ -22,7 +22,10 @@ jobs:
       - name: Setup dotnet SDK 3.1
         uses: actions/setup-dotnet@v1
         with:
-          dotnet-version: 3.1.201
+          dotnet-version: 3.1.200
+      - name: .net SxS
+        run: |
+          rsync -a ${DOTNET_ROOT/3.1.200/2.1.300}/* $DOTNET_ROOT/
       - run: dotnet build --configuration Release
       - name: test with dotnet
         run: dotnet test /p:CollectCoverage=true /p:ExcludeByFile=\"**/KubernetesClient/generated/**/*.cs\" /p:CoverletOutputFormat="cobertura"