Refactored Scalar FilterQueryArg to input type CustomFilterQuery

The former scalar FilterQueryArg, which was used to define the custom filter queries in a search query, was refactored to a GraphQL input type of the same name. In contrast to complex scalars, input types offer full support of auto completion and documentation while formulating a GraphQL query.

Follow Section, “Refactored Scalar FilterQueryArg to input type CustomFilterQuery ” for upgrade information.

(CMS-20620)

Added CacheControl support to Headless Server

Headless Server now supports sending CacheControl headers for GET requests. Defaults can be configured using the caas.cache-control.* properties. The value of the the max-age directive is the minimum of the configured max-age value for the given request URL and the values of the validFrom/validTo properties of the requested contents. If no cache control configuration exists and the content does not contain a value for validFrom/validTo then no CacheControl header is sent. A negative max-age value indicates that no CacheControl header should be sent even in the presence of configured validFrom/validTo dates.

Follow Section, “Added CacheControl support to Headless Server” for upgrade information.

(CMS-19110)