Adds HostingModel as an extra DeploymentParameter (#1261)

src/Microsoft.AspNetCore.Server.IntegrationTesting/Common/DeploymentParameters.cs

@@ -106,6 +106,8 @@ namespace Microsoft.AspNetCore.Server.IntegrationTesting
 
         public string PublishedApplicationRootPath { get; set; }
 
+        public HostingModel HostingModel { get; set; }
+
         /// <summary>
         /// Environment variables to be set before starting the host.
         /// Not applicable for IIS Scenarios.

src/Microsoft.AspNetCore.Server.IntegrationTesting/Common/HostingModel.cs

@@ -0,0 +1,11 @@
+// Copyright (c) .NET Foundation. All rights reserved.
+// Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
+
+namespace Microsoft.AspNetCore.Server.IntegrationTesting
+{
+    public enum HostingModel
+    {
+        OutOfProcess,
+        InProcess
+    }
+}

src/Microsoft.AspNetCore.Server.IntegrationTesting/Deployers/IISExpressDeployer.cs

@@ -142,6 +142,13 @@ namespace Microsoft.AspNetCore.Server.IntegrationTesting
 
                         DeploymentParameters.ServerConfigLocation = Path.GetTempFileName();
 
+                        if (serverConfig.Contains("[HostingModel]"))
+                        {
+                            var hostingModel = DeploymentParameters.HostingModel.ToString();
+                            serverConfig.Replace("[HostingModel]", hostingModel);
+                            Logger.LogDebug("Writing HostingModel '{hostingModel}' to config", hostingModel);
+                        }
+
                         Logger.LogDebug("Saving Config to {configPath}", DeploymentParameters.ServerConfigLocation);
 
                         if (Logger.IsEnabled(LogLevel.Trace))