Move urllib from core to netclient because it imports base64.
(From OE-Core rev: e74ab2c144042b0a9f788b1b15f11b2800e2c7a1)
Signed-off-by: Leon Anavi <leon.anavi@konsulko.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>