dbginfo.sh: add multipath info to map paths to FC addressing and prio group

Eases mapping of multipath paths and FCP by-path information
without having to use different tool output and correlate,
such as "multipathd -k'show topo'" and "lszfcp -D".

Possibly the HBA is reported as "[undef]" for zfcp
[without multipath-tools 0.8.9 commit
 ("libmultipath: support host adapter name lookup for s390x ccw bus")
 852a1dfd94 ]
and the FCP LUN needs to be manually converted from the SCSI LUN in h:c:i:l.

While at it, append correlation information for block device name and
major:minor, as well as all information from a standard 'show paths',
which is the path state 3-tuple and next_check,
plus the number of path failures.

Example output:

$ multipathd -k'show paths format "%w|%a|%r|%p|%i|%d|%D|%t|%T|%o|%0|%C"'
uuid                             |host adapter|target WWPN       |pri|hcil     |dev|dev_t|dm_st |chk_st|dev_st |failures|next_check
3600507640081818ab00000000000025e|[undef]     |0x500507680b2581fa|10 |0:0:0:606|sdb|8:16 |active|ready |running|0       |XXXXXX.... 13/20
3600507640081818ab00000000000025e|[undef]     |0x500507680b2581fb|50 |0:0:1:606|sdc|8:32 |active|ready |running|0       |XX........ 4/20
3600507640081818ab00000000000025e|[undef]     |0x500507680b2681fa|10 |1:0:0:606|sdd|8:48 |active|ready |running|0       |XXXX...... 8/20
3600507640081818ab00000000000025e|[undef]     |0x500507680b2681fb|50 |1:0:1:606|sde|8:64 |active|ready |running|0       |XXXXXXX... 15/20

Signed-off-by: Steffen Maier <maier@linux.ibm.com>
Signed-off-by: Jan Höppner <hoeppner@linux.ibm.com>

scripts/dbginfo.sh

@@ -463,6 +463,7 @@ CMDS="${CMDS}\
   :multipathd -k'show maps'\
   :multipathd -k'show topo'\
   :multipathd -k'show paths'\
+  :multipathd -k'show paths format %w|%a|%r|%p|%i|%d|%D|%t|%T|%o|%0|%C' | sort\
   :multipathd -k'show maps stats'\
   :multipathd -k'show maps status'\
   :multipathd -k'show status'\