[202012] [cherry-pick] Add extra lossy PG profile for ports between T1 and T2#11160

bingwang-ms wants to merge 2 commits intosonic-net:202012sonic-net/sonic-buildimage:202012from

bingwang-ms:add_lossy_pg_for_leafrouter_202012bingwang-ms/sonic-buildimage:add_lossy_pg_for_leafrouter_202012Copy head branch name to clipboard