LU-1095 obdclass: improve missing operation message

LU-1095 obdclass: improve missing operation message

Some tests in the past reported missing OBD operations, so improve
the error message to include the device name to make it easier to
debug where this is happening.

Signed-off-by: Andreas Dilger <andreas.dilger@intel.com>
Change-Id: Id49ab801158690510f9ac191c4e8f7a253bcab07
Reviewed-on: https://review.whamcloud.com/25586
Tested-by: Jenkins
Tested-by: Maloo <hpdd-maloo@intel.com>
Reviewed-by: Alex Zhuravlev <alexey.zhuravlev@intel.com>
Reviewed-by: Dmitry Eremin <dmitry.eremin@intel.com>
Reviewed-by: Oleg Drokin <oleg.drokin@intel.com>