The Python built-in ConnectionError type can be used instead of a custom
HashConnectionError type. This will make code refactoring simpler.
(Bitbake rev: 8a796c3d6d99cfa8ef7aff0ae55bb0f23bbbeae1)
Signed-off-by: Paul Barker <pbarker@konsulko.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>