Add supportedAuthentication for NoAuth in templates which have NoAuth (dotnet/aspnetcore#443)

* Add supportedAuthentication for NoAuth in templates which have NoAuth

This is to work around an issue in Visual Studio

* Remove spurious ,

* Add supportedAuthentications to F# Web API vs-2017.3.host.json

Commit migrated from dotnet/aspnetcore@8a368b5610

src/Microsoft.DotNet.Web.Spa.ProjectTemplates/content/Angular-CSharp/.template.config/vs-2017.3.host.json

@@ -16,6 +16,13 @@
   "uiFilters": [
     "oneaspnet"
   ],
+  "supportedAuthentications": [
+    {
+      "auth": "None",
+      "authenticationType": "NoAuth",
+      "allowUnsecured": true
+    }
+  ],
   "ports": [
     {
       "name": "HttpPort",

src/Microsoft.DotNet.Web.Spa.ProjectTemplates/content/React-CSharp/.template.config/vs-2017.3.host.json

@@ -16,6 +16,13 @@
   "uiFilters": [
     "oneaspnet"
   ],
+  "supportedAuthentications": [
+    {
+      "auth": "None",
+      "authenticationType": "NoAuth",
+      "allowUnsecured": true
+    }
+  ],
   "ports": [
     {
       "name": "HttpPort",

src/Microsoft.DotNet.Web.Spa.ProjectTemplates/content/ReactRedux-CSharp/.template.config/vs-2017.3.host.json

@@ -16,6 +16,13 @@
   "uiFilters": [
     "oneaspnet"
   ],
+  "supportedAuthentications": [
+    {
+      "auth": "None",
+      "authenticationType": "NoAuth",
+      "allowUnsecured": true
+    }
+  ],
   "ports": [
     {
       "name": "HttpPort",