Add multi-asic support for test-intf-fec#17814

yejianquan merged 2 commits intosonic-net:mastersonic-net/sonic-mgmt:masterfrom

auspham:austinpham/28838870-enable-test-intf-fec-t2auspham/sonic-mgmt:austinpham/28838870-enable-test-intf-fec-t2Copy head branch name to clipboard