client: fix exception semantics in _raise_for_status (#2954)
client: fix exception semantics in _raise_for_status (#2954)

We want "The above exception was the direct cause of the following exception:" instead of "During handling of the above exception, another exception occurred:"

Signed-off-by: Maor Kleinberger <985062335b83ff02c297839fd0f98fa29081adf3@gmail.com>
docker/docker-py,docker/docker-py