Use json pretty_generate in usage data rake tasks

changelogs/unreleased/use-json-pretty_generate_in_usage_data_rake_tasks.yml

+---
+title: Add usage data rake tasks to prettify JSON output
+merge_request: 49137
+author:
+type: added

doc/raketasks/README.md

@@ -42,6 +42,7 @@ The following are available Rake tasks:
 | [Repository storage](../administration/raketasks/storage.md)                                        | List and migrate existing projects and attachments from legacy storage to hashed storage. |
 | [Uploads migrate](../administration/raketasks/uploads/migrate.md)                                   | Migrate uploads between storage local and object storage.                                 |
 | [Uploads sanitize](../administration/raketasks/uploads/sanitize.md)                                 | Remove EXIF data from images uploaded to earlier versions of GitLab.                      |
+| [Usage data](../administration/troubleshooting/gitlab_rails_cheat_sheet.md#generate-usage-ping)     | Generate and troubleshoot [Usage Ping](../development/product_analytics/usage_ping.md).|
 | [User management](user_management.md)                                                               | Perform user management tasks.                                                            |
 | [Webhooks administration](web_hooks.md)                                                             | Maintain project Webhooks.                                                                |
 | [X.509 signatures](x509_signatures.md)                                                              | Update X.509 commit signatures, useful if certificate store has changed.                  |

lib/tasks/gitlab/usage_data.rake

@@ -12,13 +12,14 @@ namespace :gitlab do
 
     desc 'GitLab | UsageData | Generate usage ping in JSON'
     task generate: :environment do
-      puts Gitlab::UsageData.to_json(force_refresh: true)
+      puts Gitlab::Json.pretty_generate(Gitlab::UsageData.uncached_data)
     end
 
     desc 'GitLab | UsageData | Generate usage ping and send it to Versions Application'
     task generate_and_send: :environment do
       result = SubmitUsagePingService.new.execute
-      puts result.inspect
+
+      puts Gitlab::Json.pretty_generate(result.attributes)
     end
   end
 end