Fails to parse with SystemExit

[alfredodeza]

============================= test session starts ==============================
platform linux -- Python 3.6.7, pytest-4.3.0, py-1.8.0, pluggy-0.9.0
rootdir: /home/alfredo/python/ceph-medic, inifile: setup.cfg
plugins: cov-2.6.1
collected 1 item

tests/util/test_hosts.py F                                               [100%]

=================================== FAILURES ===================================
______________ TestContainerPlatform.test_unable_to_retrieve_pods ______________
tests/util/test_hosts.py:9: in test_unable_to_retrieve_pods
    hosts.container_platform()
util/hosts.py:38: in container_platform
    raise SystemExit('\n'.join(err))
E   SystemExit
----------------------------- Captured stdout call -----------------------------
--> Unable to retrieve the pods using command: oc --request-timeout=5 get -n rook-ceph pods -o json
=========================== 1 failed in 0.06 seconds ===========================