LU-9463 utils: print lcme_flags in text format

Print lcme_flags in comma-separated text format(e.g. init)
instead of hex numbers.

Signed-off-by: Emoly Liu <emoly.liu@intel.com>
Change-Id: Iae8b679aef8f7c0b86af3e94d5bb996d4d98757b
Reviewed-on: https://review.whamcloud.com/27058


Tested-by: Jenkins
Reviewed-by: Andreas Dilger <andreas.dilger@intel.com>
Reviewed-by: Niu Yawei <yawei.niu@intel.com>
Tested-by: Maloo <hpdd-maloo@intel.com>