EX-4075 lipe: Modify log messages, use xstrdup()

EX-4075 lipe: Modify log messages, use xstrdup()

Preserve errno across log message output
Modify log messages for style reason
and corresponded message in test script
Removed trailing blanks
Replace strdup() by xstrdup()
Add double quotes in test script to prevent script's
"ambiguous redirection" error

Test-Parameters: trivial testlist=hot-pools
Signed-off-by: Alexandre Ioffe <aioffe@ddn.com>
Change-Id: Ie12fe9bbca60fe28ef260d820b55a8195492618f
Reviewed-on: https://review.whamcloud.com/45366
Tested-by: jenkins <devops@whamcloud.com>
Tested-by: Maloo <maloo@whamcloud.com>
Reviewed-by: John L. Hammond <jhammond@whamcloud.com>
Reviewed-on: https://review.whamcloud.com/46126