Add usage ping for Auto DevOps

Fixes gitlab-org/gitlab-ce#37648

changelogs/unreleased/zj-usage-data-auto-devops.yml

+---
+title: Add usage data for Auto DevOps
+merge_request:
+author:
+type: other

lib/gitlab/usage_data.rb

@@ -22,6 +22,8 @@ module Gitlab
             ci_builds: ::Ci::Build.count,
             ci_internal_pipelines: ::Ci::Pipeline.internal.count,
             ci_external_pipelines: ::Ci::Pipeline.external.count,
+            ci_pipeline_config_auto_devops: ::Ci::Pipeline.auto_devops_source.count,
+            ci_pipeline_config_repository: ::Ci::Pipeline.repository_source.count,
             ci_runners: ::Ci::Runner.count,
             ci_triggers: ::Ci::Trigger.count,
             ci_pipeline_schedules: ::Ci::PipelineSchedule.count,

spec/lib/gitlab/usage_data_spec.rb

@@ -40,6 +40,8 @@ describe Gitlab::UsageData do
         ci_builds
         ci_internal_pipelines
         ci_external_pipelines
+        ci_pipeline_config_auto_devops
+        ci_pipeline_config_repository
         ci_runners
         ci_triggers
         ci_pipeline_schedules