Add option to run the server on http & https (#818)

* HostingProtocol.HttpAndHttps

* .

* .

* .

* HostingScheme

src/WireMock.Net/Settings/WireMockServerSettings.cs

@@ -9,6 +9,7 @@ using WireMock.Handlers;
 using WireMock.Logging;
 using WireMock.Matchers;
 using WireMock.RegularExpressions;
+using WireMock.Types;
 #if USE_ASPNETCORE
 using Microsoft.Extensions.DependencyInjection;
 using WireMock.Types;
@@ -22,7 +23,7 @@ namespace WireMock.Settings
     public class WireMockServerSettings
     {
         /// <summary>
-        /// Gets or sets the port.
+        /// Gets or sets the http port.
         /// </summary>
         [PublicAPI]
         public int? Port { get; set; }
@@ -34,6 +35,12 @@ namespace WireMock.Settings
         [PublicAPI]
         public bool? UseSSL { get; set; }
 
+        /// <summary>
+        /// Defines on which scheme (http/https) to host. (This overrides the <c>UseSSL</c> value).
+        /// </summary>
+        [PublicAPI]
+        public HostingScheme? HostingScheme { get; set; }
+
         /// <summary>
         /// Gets or sets whether to start admin interface.
         /// </summary>