Usage ping for projects_reporting_ci_cd_back_to_github (#5581)

lib/gitlab/usage_data.rb

@@ -91,6 +91,7 @@ module Gitlab
             pages_domains: PagesDomain.count,
             projects: Project.count,
             projects_imported_from_github: Project.where(import_type: 'github').count,
+            projects_reporting_ci_cd_back_to_github: GithubService.without_defaults.active.count,
             protected_branches: ProtectedBranch.count,
             releases: Release.count,
             remote_mirrors: RemoteMirror.count,

spec/lib/gitlab/usage_data_spec.rb

@@ -107,6 +107,7 @@ describe Gitlab::UsageData do
         notes
         projects
         projects_imported_from_github
+        projects_reporting_ci_cd_back_to_github
         projects_jira_active
         projects_slack_notifications_active
         projects_slack_slash_active