[Submodule update] sonic-utilities

update the environment variable in the teardown (#1101)
Fix for show interface portchannel now working on 201911 (#1105)
Revert "Pfcstat (#1097)"
Revert " [201911]show interface counters for multi ASIC devices
      (#1104)"

Signed-off-by: Abhishek Dosi <[email protected]>

Author: abdosi