Fix client/server "all clients" reporting

Fix client/server "all clients" reporting

In commit e883cb3501de0f99297282c18842d50aaa7fa531, the default significant figures was added.  The default value was preserved for local jobs and when client/server was used if jobs=1, but not when client/server was used if jobs > 1.  This patch restores some reporting outputs ("all clients" output for IOPS and BW) when client/server is used if > 1 jobs, for example:

OLD:
All clients: (groupid=0, jobs=2): err= 0: pid=0: Wed Jan  3 14:30:13 2018
   read: IOPS=0, BW=0 (0)(0B/5001msec)                                               <--ZERO VALUES
    slat (nsec): min=762, max=108579, avg=1058.97, stdev=221.30
    clat (nsec): min=254, max=4544.2k, avg=11297.64, stdev=8284.14
     lat (usec): min=9, max=4545, avg=12.41, stdev= 8.30
   bw (  KiB/s): min=290192, max=347160, per=49.35%, avg=303613.33, stdev=11582.87, samples=18
   iops        : min=72548, max=86790, avg=75903.33, stdev=2895.72, samples=18

NEW:
All clients: (groupid=0, jobs=2): err= 0: pid=0: Wed Jan  3 15:08:33 2018
   read: IOPS=147k, BW=575Mi (603M)(2876MiB/5001msec)	<--CORRECT VALUES
    slat (nsec): min=841, max=61945, avg=1304.83, stdev=232.75
    clat (nsec): min=544, max=4487.2k, avg=11736.68, stdev=9123.64
     lat (usec): min=10, max=4489, avg=13.10, stdev= 9.13
   bw (  KiB/s): min=260945, max=305976, per=49.99%, avg=294350.22, stdev=9192.53, samples=18
   iops        : min=65236, max=76494, avg=73587.56, stdev=2298.13, samples=18

Regards,
Jeff

Signed-off-by: Jens Axboe <axboe@kernel.dk>