Refactor HTTP proxy support to support JDK HTTP client #6333
Description
What should we do?
The proxy detection support for the CONNECTORS_HTTP_PROXY* variables is currently specific to the Apache HTTP client. Extract the resolving logic into a generic component suitable to configure other HTTP clients as well while keeping the Apache integration functionally equal.
Why should we do it?
Add proxy support to different HTTP clients in connectors not directly relying on the connectors HTTP-client.