EX-5815 lipe: do not print in lpcc signal handler

EX-5815 lipe: do not print in lpcc signal handler

Do not print in lpcc signal handler.
It's invalid in python script.

Signed-off-by: Lei Feng <flei@whamcloud.com>
Test-Parameters: trivial testlist=sanity-pcc env=ONLY=210
Change-Id: I61eb80ff1d59453dc12855fd2f1ac4f1e6e40757
Reviewed-on: https://review.whamcloud.com/48449
Tested-by: jenkins <devops@whamcloud.com>
Tested-by: Maloo <maloo@whamcloud.com>
Reviewed-by: Alex Deiter <alex.deiter@gmail.com>
Reviewed-by: Andreas Dilger <adilger@whamcloud.com>