Revert "Remove service from event"

This reverts commit 164828f.

Author: nvborisenko

dotnet/test/common/Environment/DriverFactory.cs

@@ -127,17 +127,17 @@ public IWebDriver CreateDriverWithOptions(Type driverType, DriverOptions driverO
                 service.DriverServiceExecutableName = Path.GetFileName(this.driverPath);
             }
 
-            this.OnDriverLaunching(options);
+            this.OnDriverLaunching(service, options);
 
             driver = (IWebDriver)Activator.CreateInstance(driverType, service, options);
             return driver;
         }
 
-        protected void OnDriverLaunching(DriverOptions options)
+        protected void OnDriverLaunching(DriverService service, DriverOptions options)
         {
             if (this.DriverStarting != null)
             {
-                DriverStartingEventArgs args = new DriverStartingEventArgs(options);
+                DriverStartingEventArgs args = new DriverStartingEventArgs(service, options);
                 this.DriverStarting(this, args);
             }
         }

dotnet/test/common/Environment/DriverStartingEventArgs.cs

@@ -21,13 +21,17 @@ namespace OpenQA.Selenium.Environment
 {
     public class DriverStartingEventArgs
     {
+        DriverService service;
         DriverOptions options;
 
-        public DriverStartingEventArgs(DriverOptions options)
+        public DriverStartingEventArgs(DriverService service, DriverOptions options)
         {
+            this.Service = service;
             this.Options = options;
         }
 
+        public DriverService Service { get => service; set => service = value; }
+
         public DriverOptions Options { get => options; set => options = value; }
     }
 }