use updated querystring config

[bengerman13]

In order to keep the broker maintainable and understandable, we want to use QueryStringsConfig when calling create/updateDistribution on cloudfront distributions, rather than ForwarededValues.QueryString

For now, we should match the existing behavior, which is to forward all query strings and cache on all query strings

Security considerations

This does not effect security

[bengerman13]

AWS doesn't seem to be removing this functionality soon, and the new config is going to hit service limits quickly. We should talk with AWS about timeline for deprecation and hard limits.