Merge pull request #18421 from jtattermusch/fix_grpc_dotnet_interop

Fix grpc-dotnet interop tests

templates/tools/dockerfile/interoptest/grpc_interop_aspnetcore/build_interop.sh.template

@@ -25,7 +25,14 @@
   cp -r /var/local/jenkins/service_account $HOME || true
 
   cd /var/local/git/grpc-dotnet
+  
+  # If needed, update dotnet SDK and put it on path
   ./build/get-dotnet.sh
+  if [ -f $HOME/.dotnet/dotnet ]
+  then
+    ln -s $HOME/.dotnet/dotnet /usr/local/bin/dotnet
+  fi
+  
   ./build/get-grpc.sh
 
   cd testassets/InteropTestsWebsite

tools/dockerfile/interoptest/grpc_interop_aspnetcore/build_interop.sh

@@ -23,7 +23,14 @@ git clone /var/local/jenkins/grpc-dotnet /var/local/git/grpc-dotnet
 cp -r /var/local/jenkins/service_account $HOME || true
 
 cd /var/local/git/grpc-dotnet
+
+# If needed, update dotnet SDK and put it on path
 ./build/get-dotnet.sh
+if [ -f $HOME/.dotnet/dotnet ]
+then
+  ln -s $HOME/.dotnet/dotnet /usr/local/bin/dotnet
+fi
+
 ./build/get-grpc.sh
 
 cd testassets/InteropTestsWebsite