Fix logging messages in os_patching case

Dictionary of packages for Centos was not
shown correct
Change-Id: Ibaacbdf9f4d57ec5eca1653679e5bb605f9065fb
(cherry picked from commit eef2e0474037d860304fde9dc2b5a0fc047aa0a1)
Merge "Fix logging messages in os_patching case" into stable/6.0