Revert "CI: Use /bin/sh as a CONFIG SHELL"
This reverts commit 35f29b17699c3d52f77857c530300318b14148f8.
Workaround is not required anymore.
Reviewed-by: Fabiano FidĂȘncio <fidencio@redhat.com>
(cherry picked from commit 7c0402b85627587bcac004d4bfdbf181bbae8549)
(cherry picked from commit 8d56ad9bdff71ab6e0d7aff9a64eaaf67b69866a)