Issue #3515790: Increase Tugboat Preview expiration to 30 days

drupalorg/includes/TugboatPreview.php

@@ -215,7 +215,7 @@ class TugboatPreview {
       'ref' => $this->merge_request_id,
       'repo' => $this->repository_id,
       'name' => $this->source_branch,
-      'expires' => date('c', strtotime('+5 days')),
+      'expires' => date('c', strtotime(variable_get('tugboat_preview_expires_datetime', '+30 days'))),
       'type' => 'pullrequest',
     ];