Handle Instance being last column

[Pitterling]

some statistic list the instance as last column instead of first
see also #191

FCHOST

00:00:01    fch_rxf/s fch_txf/s fch_rxw/s fch_txw/s FCHOST
00:10:01         0.00      0.00      4.20      0.00 host0
00:10:01       928.00   2464.92 160168.98 972923.25 host7
00:10:01         0.00      0.00      2.05      0.00 host5
00:10:01       936.06   3266.98 161468.13 1399468.32 host3
00:10:01         0.00      0.00      1.63      0.00 host1
00:10:01       942.92   2458.92 159776.51 958927.66 host6
00:10:01         0.00      0.00      1.95      0.00 host4
00:10:01       941.30   2466.90 158995.28 963167.76 host2

FILESYSTEM

12:00:01 AM  MBfsfree  MBfsused   %fsused  %ufsused     Ifree     Iused    %Iused FILESYSTEM
12:05:01 AM      5492      2507     31.34     36.66    493580     30708      5.86 /dev/sda5
12:05:01 AM      3364     12699     79.06     84.26    687301    361275     34.45 /dev/sda6
12:05:01 AM     63827    311522     83.00     88.08  24001704    418648      1.71 /dev/mapper/home
12:05:01 AM     28397      3729     11.61     16.76   2052540     44612      2.13 /dev/sda7