Upgrade Projects (#900)

* Upgrade Projects

* Push to trigger builds

* Tried Thread Sleep before deleting file

* FileDeleteTryCatch

* Updated from AspnetCore All to App

* Travis version Upgrade (.net core 2.2)

* dotnet 2.2.105

samples/OcelotEureka/ApiGateway/Program.cs

@@ -1,4 +1,7 @@
-namespace ApiGateway
+using Ocelot.Provider.Eureka;
+using Ocelot.Provider.Polly;
+
+namespace ApiGateway
 {
     using Microsoft.AspNetCore;
     using Microsoft.AspNetCore.Hosting;
@@ -27,7 +30,9 @@
                 })
                 .ConfigureServices(s =>
                 {
-                    s.AddOcelot();
+                    s.AddOcelot()
+                        .AddEureka()
+                        .AddPolly();
                 })
                 .Configure(a =>
                 {