[submodule update] sonic-util

Fix error when running 'show lldp table' or 'show lldp neighbor'
through SSH command. (sonic-net#1067)
[201911]: Multi asic show interface support (sonic-net#1070)
[counterpoll] Add new FC group for port buffer drop counters
(sonic-net#1024)
[201911] show interface portchannel support for Multi ASIC
(sonic-net#1071)
Fix a typo in mellanox_buffer_migrator (sonic-net#1090)
Fix pfcwd stats crash with invalid queue name (sonic-net#1077)
[PFCWD] Fix issue with "pfcwd show stats" command during SONiC init
(sonic-net#1018)
enable watchdog before running platform specific reboot plugin
(sonic-net#1037)
Add namespace of the process in the coredump filename. (sonic-net#1091)