Fix `rebuild_index` config entries casting.
Fix `rebuild_index` config entries casting.

mozilla/mozillians,akatsoulas/mozillians,akatsoulas/mozillians,mozilla/mozillians,mozilla/mozillians,johngian/mozillians,johngian/mozillians,johngian/mozillians,akatsoulas/mozillians,mozilla/mozillians,johngian/mozillians,akatsoulas/mozillians