[master] update sonic-utilities (sonic-net#12307)

ac71d74 [VxLAN]Fix Vxlan delete command to throw error when there are references (sonic-net#2404)
7419c67 Added cisco config platform commands (sonic-net#2242)
8760bbe Add UT to check sonic installer does not depend on database (sonic-net#2401)
6bef652 [doc] add documentation on automatic techsupport based on memory (sonic-net#2411)
4a78374 [doc] update "config feature" section with "--block" option (sonic-net#2409)
dd6210f [Vxlanmgrd] [CPA] Update the vxlan_tunnel name len to be under IFNAMIZ to overcome netdev creation failure (sonic-net#2398)
bdc4a8a Fix broken pipeline build URL (sonic-net#2363)
b31681b Fix display disorder problem of show vrf (sonic-net#2392)
123504a YANG validation for ConfigDB Updates: portchannel add/remove, loopback interface, VLAN
28f6820 [link-local]Modify RIF check to include link-local enabled interfaces (sonic-net#2394)

Author: wen587