CSHARP-2444: Rename SkipTestException SkipException after rebasing.

Author: rstam

tests/MongoDB.Driver.Tests/Specifications/command-monitoring/TestRunner.cs

@@ -132,7 +132,7 @@ public void RunTestDefinition(IEnumerable<BsonDocument> data, string databaseNam
                 {
                     case "A successful insert one command with write errors":
                     case "A successful insert many command with write errors":
-                        throw new SkipTestException("Test ignored because of CSHARP-2444");
+                        throw new SkipException("Test ignored because of CSHARP-2444");
                 }
             }