LU-10310 utils: change l_getidentity log level

LU-10310 utils: change l_getidentity log level

With current error level(NOTICE) l_getidentity error
messages don't appear in kernel messages. Changing
this level to WARNING may help to better and faster
understanding that issue relates to l_getidentity.

Change error level for errlog->vsyslog from LOG_NOTICE
to LOG_WARNING.

Test-Parameters: trivial
Cray-bug-id: MRP-2132
Change-Id: If72a5ee52de89b15b4bb7fc0dda77915531dbc39
Signed-off-by: Sergey Cheremencev <c17829@cray.com>
Reviewed-on: https://review.whamcloud.com/30338
Tested-by: Jenkins
Tested-by: Maloo <hpdd-maloo@intel.com>
Reviewed-by: Andreas Dilger <andreas.dilger@intel.com>
Reviewed-by: John L. Hammond <john.hammond@intel.com>