[Loggers] Rename "telemetry" to "usage"

src/plugins/home/server/services/sample_data/sample_data_registry.ts

@@ -52,7 +52,7 @@ export class SampleDataRegistry {
     }
     const usageTracker = usage(
       core.getStartServices().then(([coreStart]) => coreStart.savedObjects),
-      this.initContext.logger.get('sample_data', 'telemetry')
+      this.initContext.logger.get('sample_data', 'usage')
     );
     const router = core.http.createRouter();
     createListRoute(router, this.sampleDatasets);

x-pack/plugins/actions/server/plugin.ts

@@ -151,7 +151,7 @@ export class ActionsPlugin implements Plugin<Promise<PluginSetupContract>, Plugi
       .toPromise();
 
     this.logger = initContext.logger.get('actions');
-    this.telemetryLogger = initContext.logger.get('telemetry');
+    this.telemetryLogger = initContext.logger.get('usage');
     this.preconfiguredActions = [];
   }
 

x-pack/plugins/alerts/server/plugin.ts

@@ -117,7 +117,7 @@ export class AlertingPlugin {
     this.logger = initializerContext.logger.get('plugins', 'alerting');
     this.taskRunnerFactory = new TaskRunnerFactory();
     this.alertsClientFactory = new AlertsClientFactory();
-    this.telemetryLogger = initializerContext.logger.get('telemetry');
+    this.telemetryLogger = initializerContext.logger.get('usage');
     this.kibanaIndex = initializerContext.config.legacy.globalConfig$
       .pipe(
         first(),

x-pack/plugins/lens/server/plugin.tsx

@@ -31,7 +31,7 @@ export class LensServerPlugin implements Plugin<{}, {}, {}, {}> {
 
   constructor(initializerContext: PluginInitializerContext) {
     this.kibanaIndexConfig = initializerContext.config.legacy.globalConfig$;
-    this.telemetryLogger = initializerContext.logger.get('telemetry');
+    this.telemetryLogger = initializerContext.logger.get('usage');
   }
   setup(core: CoreSetup<PluginStartContract>, plugins: PluginSetupContract) {
     setupSavedObjects(core);