Backportto 2.5: Improve error logging on failed blob uploads
CLOSED - CURRENTRELEASE
We currently have
"/usr/lib/python3.6/site-packages/pulp_container/app/registry_api.py", line 717, in put raise Exception("Failed.") Exception: Failed.
We should include the information of the original error from the task in this reraise.
Improved error logging on failed image push.
closes #8888 backports #8879
(cherry picked from commit 98196997256da0b4af2017bddc3a7e890140d280)