EX-6497 lipe: Refine stats field name in lamigo

EX-6497 lipe: Refine stats field name in lamigo

Corrected periodically printed by lamigo INFO
message "processed":
- Added two additional fields:
  "running" - number of currently running jobs such as replication
  "delayed" - current number of failed and other (such as set flag)
  jobs which are awating to be run on next lamigo cycle
- "in queue" field is changed to "awaiting". This is current number
  of files in the internal cache. These files are awating to be
  processed (replicated)

Test-Parameters: trivial testlist=hot-pools
Signed-off-by: Alexandre Ioffe <aioffe@ddn.com>
Change-Id: Iacf0199cfcf56edcbb8ad91e0e4b62c7451900f5
Reviewed-on: https://review.whamcloud.com/c/ex/lustre-release/+/49344
Tested-by: jenkins <devops@whamcloud.com>
Tested-by: Maloo <maloo@whamcloud.com>
Reviewed-by: Colin Faber <cfaber@ddn.com>
Reviewed-by: Andreas Dilger <adilger@whamcloud.com>