This renames two options for wireguard interfaces in
/etc/config/gateway:
public_key -> remote_public_key
private_key -> local_private_key

Signed-off-by: Alexander Gutzeit <[email protected]>
Reviewed-by: Robert Langhammer <[email protected]>
[adjusted commit message/title, added version bump, remove
rename for network config]
Signed-off-by: Adrian Schmutzler <[email protected]>