Add clientID and clientVersion to the diagnostics page.

pkg/analysis_server/lib/src/server/driver.dart

Index: pkg/analysis_server/lib/src/server/driver.dart
diff --git a/pkg/analysis_server/lib/src/server/driver.dart b/pkg/analysis_server/lib/src/server/driver.dart
index b60fc3fd2955e8081dd2540ae62e5e043fc52142..45a543cdc2d59a50ff08954456faa49bd4ea8df0 100644
--- a/pkg/analysis_server/lib/src/server/driver.dart
+++ b/pkg/analysis_server/lib/src/server/driver.dart
@@ -389,6 +389,10 @@ class Driver implements ServerStarter {
     analysisServerOptions.fileReadMode = results[FILE_READ_MODE];
     analysisServerOptions.newAnalysisDriverLog =
         results[NEW_ANALYSIS_DRIVER_LOG];
+
+    analysisServerOptions.clientId = results[CLIENT_ID];
+    analysisServerOptions.clientVersion = results[CLIENT_VERSION];
+
     analysisServerOptions.enableVerboseFlutterCompletions =
         results[VERBOSE_FLUTTER_COMPLETIONS];
 
@@ -532,6 +536,7 @@ class Driver implements ServerStarter {
         negatable: false);
     parser.addFlag(HELP_OPTION,
         help: "print this help message without starting a server",
+        abbr: 'h',
         defaultsTo: false,
         negatable: false);
     parser.addOption(INCREMENTAL_RESOLUTION_LOG,