LU-14431 log: Add ending newline for some messages.

LU-14431 log: Add ending newline for some messages.

Some log messages don't have ending newline. So two log messages
will be merged into one line and cause error for parsing program.
Add ending newline for these messages.

Signed-off-by: Lei Feng <flei@whamcloud.com>
Change-Id: I79acba9fc494c148dfe2c56cdbe7694b4bbc5cf4
Test-Parameters: trivial
Reviewed-on: https://review.whamcloud.com/41723
Tested-by: jenkins <devops@whamcloud.com>
Reviewed-by: Li Xi <lixi@ddn.com>
Reviewed-by: Andreas Dilger <adilger@whamcloud.com>
Tested-by: Maloo <maloo@whamcloud.com>
Reviewed-by: Anjus George <georgea@ornl.gov>