gRPC template fixes (#11775)

eng/Versions.props

@@ -217,7 +217,7 @@
     <CastleCorePackageVersion>4.2.1</CastleCorePackageVersion>
     <FSharpCorePackageVersion>4.2.1</FSharpCorePackageVersion>
     <GoogleProtobufPackageVersion>3.8.0</GoogleProtobufPackageVersion>
-    <GrpcAspNetCorePackageVersion>0.1.22-pre1</GrpcAspNetCorePackageVersion>
+    <GrpcAspNetCorePackageVersion>0.1.22-pre2</GrpcAspNetCorePackageVersion>
     <IdentityServer4AspNetIdentityPackageVersion>3.0.0-preview3.4</IdentityServer4AspNetIdentityPackageVersion>
     <IdentityServer4EntityFrameworkPackageVersion>3.0.0-preview3.4</IdentityServer4EntityFrameworkPackageVersion>
     <IdentityServer4PackageVersion>3.0.0-preview3.4</IdentityServer4PackageVersion>

src/ProjectTemplates/Web.ProjectTemplates/content/GrpcService-CSharp/Properties/launchSettings.json

@@ -3,7 +3,7 @@
     "GrpcService-CSharp": {
       "commandName": "Project",
       "launchBrowser": false,
-      "applicationUrl": "https://localhost:50051",
+      "applicationUrl": "https://localhost:5001",
       "environmentVariables": {
         "ASPNETCORE_ENVIRONMENT": "Development"
       }

src/ProjectTemplates/Web.ProjectTemplates/content/GrpcService-CSharp/appsettings.json

@@ -5,5 +5,10 @@
       "Microsoft.Hosting.Lifetime": "Information"
     }
   },
-  "AllowedHosts": "*"
+  "AllowedHosts": "*",
+  "Kestrel": {
+    "EndpointDefaults": {
+      "Protocols": "Http2"
+    }
+  }
 }