f9b664c947
Fixes #5652 This reworks and unifies HTTP client/transport management in Talos: * cleanhttp is used everywhere consistently * DefaultClient is using pooled client, other clients use regular transport * like before, Proxy vars are inspected on each request (but now consistently) * manifest download functions now recreate the client on each run to pick up latest changes * system CA list is picked up from a fixed locations, and supports reloading on changes Signed-off-by: Andrey Smirnov <andrey.smirnov@talos-systems.com>