fix(client-route53): reintroduce waiters

Author: trivikr

clients/client-route-53/index.ts

@@ -27,6 +27,7 @@ export * from "./commands/DisassociateVPCFromHostedZoneCommand";
 export * from "./commands/EnableHostedZoneDNSSECCommand";
 export * from "./commands/GetAccountLimitCommand";
 export * from "./commands/GetChangeCommand";
+export * from "./waiters/waitForResourceRecordSetsChanged";
 export * from "./commands/GetCheckerIpRangesCommand";
 export * from "./commands/GetDNSSECCommand";
 export * from "./commands/GetGeoLocationCommand";