An actuator endpoint is designed around a single class flagged with `@Endpoint`. Such endpoint can have some of its operations refined with a given tech (for instance via a `EndpointWebExtension` for web specific concerns). This design mandates that an endpoint (and its tech specific refinements are managed centrally to form a unified contract). As Spring Cloud is extending the standard Spring Boot's `env` endpoint, this commit introduces a WritableEnvironmentEndpoint with a web extension. Closes gh-367 Closes gh-354
Spring Cloud Context
Utilities and special services for the ApplicationContext of a Spring Cloud application (bootstrap context, encryption, refresh scope and environment endpoints).