Add support for Faults (#360)

* FaultType - wip

* .

* copy fault

* tests

* code-factor

* more tests

* fix tests

* fixed

* remove RANDOM_DATA_THEN_CLOSE

src/WireMock.Net/Admin/Requests/LogResponseModel.cs

@@ -1,5 +1,6 @@
 using System.Collections.Generic;
 using WireMock.Admin.Mappings;
+using WireMock.ResponseBuilders;
 using WireMock.Util;
 
 namespace WireMock.Admin.Requests
@@ -68,5 +69,15 @@ namespace WireMock.Admin.Requests
         /// The detected body type (detection based on Content-Type).
         /// </summary>
         public BodyType DetectedBodyTypeFromContentType { get; set; }
+
+        /// <summary>
+        /// The FaultType.
+        /// </summary>
+        public string FaultType { get; set; }
+
+        /// <summary>
+        /// Gets or sets the Fault percentage.
+        /// </summary>
+        public double? FaultPercentage { get; set; }
     }
 }