Add iterator with Cache Control http header as a default.

[arturobernalg]

No description provided.

[ok2c]

@arturobernalg What is this good for? There is already a generic #iterate method.

[arturobernalg]

@arturobernalg What is this good for? There is already a generic #iterate method.

to replace/use e.g
https://github.com/apache/httpcomponents-client/blob/master/httpclient5-cache/src/main/java/org/apache/hc/client5/http/impl/cache/CachedResponseSuitabilityChecker.java
or
https://github.com/apache/httpcomponents-client/blob/master/httpclient5-cache/src/main/java/org/apache/hc/client5/http/impl/cache/CacheValidityPolicy.java

[ok2c]

@arturobernalg Please use the generic #iterate instead.