LU-5950 mgc: add nid iteration

LU-5950 mgc: add nid iteration

mgc_apply_recover_logs use only first nid from entry,
this could be the problem for a cluster with several network
address for a one node.

Signed-off-by: Alexander Boyko <alexander.boyko@seagate.com>
Change-Id: I6ec348761c2d51edd613cb388e37ef7776990424
Xyratex-bug-id: MRP-2255
Reviewed-on: http://review.whamcloud.com/12829
Reviewed-by: Andreas Dilger <andreas.dilger@intel.com>
Tested-by: Jenkins
Reviewed-by: Mike Pershin <mike.pershin@intel.com>
Reviewed-by: Ann Koehler <amk@cray.com>
Tested-by: Maloo <hpdd-maloo@intel.com>