Changelog

• [FEATURE] Add Query-Scheduler #268
• [ENHANCEMENT] Allow StoreGateway podManagementPolicy to be changed #332
• [ENHANCEMENT] Add pod topology spread constrant option #343
• [BUGFIX] Correct a typo in enabling distributor HPA #334
• [BUGFIX] Frontend memcached address did not match the Service #337
• [BUGFIX] Add service discovery method for query-scheduler addresses #338