Merge branch 'acunskis-metrics-preprod-env' into 'master'

E2E: Add preprod environment detection

See merge request gitlab-org/gitlab!71563

qa/qa/support/formatters/test_stats_formatter.rb

@@ -116,11 +116,11 @@ module QA
           @merge_request ||= (!!env('CI_MERGE_REQUEST_IID') || !!env('TOP_UPSTREAM_MERGE_REQUEST_IID')).to_s
         end
 
-        # Test run type from staging, canary or production env
+        # Test run type from staging, canary, preprod or production env
         #
-        # @return [String>, nil]
+        # @return [String, nil]
         def run_type
-          return unless %w[staging canary production].include?(project_name)
+          return unless %w[staging canary preprod production].include?(project_name)
 
           @run_type ||= begin
             test_subset = if env('NO_ADMIN') == 'true'