[route53] add 20m cache for calls

[taraspos]

Summary

This PR adds 20m cache to route53 calls and reuses responses, which will make twice less calls to route53.

All Amazon Route 53 API requests
For the Amazon Route 53 APIs five requests per second per AWS account. If you submit more than five requests per second, Amazon Route 53 returns an HTTP 400 error (Bad request). The response header also includes a Code element with a value of Throttling and a Message element with a value of Rate exceeded.

https://docs.aws.amazon.com/Route53/latest/DeveloperGuide/DNSLimitations.html#limits-api-requests