Revert "fix a typo"

This reverts commit 68c3943ff14390e9660d214dfb9a8cf42b925e5e.
Merge branch '0.4.0.0' of https://github.com/intel-cloud/cosbench into 0.4.0.0
Revert "share one method in one client"

This reverts commit 2a24a470228e7c28d763212cbc326d0f0b93bdd3.