Requests need hashlib to run with Python 2. Otherwise it is not possible to
import, due to missing e.g. md5.
[Peter: tweak commit message]
Signed-off-by: Sven Haardiek <sven.haardiek@iotec-gmbh.de>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
(cherry picked from commit 2c2f6f6630)
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>