Description of problem:
cleanup function uses tar command with ${LOGDIR}, which always
has trailing '/', so every time we run a test we see warning
"tar: Removing leading `/' from member names"
    
we can fix this by tar option:
    
-P, --absolute-names
    Don't strip leading slashes from file names when creating
    archives.

Version-Release number of selected component (if applicable):
mainline

How reproducible:
run any test

Steps to Reproduce:
1.
2.
3.

Actual results:
"tar: Removing leading `/' from member names"

Expected results:
no such warning 

Additional info: