* Revert "shell checks: double quote expansion fixes (#1777)"

This reverts commit 17cba4e8

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Signed-off-by: YangKeao <keao.yang@yahoo.com>

* fix iochaos e2e test
Signed-off-by: YangKeao <keao.yang@yahoo.com>
Co-authored-by: Ti Chi Robot <ti-community-prow-bot@tidb.io>