Arista 7060X & 7260X (Update) (#1535)

device-types/Arista/DCS-7060CX-32S-F.yaml

device-types/Arista/DCS-7060CX-32S-R.yaml

device-types/Arista/DCS-7060CX-64-F.yaml

device-types/Arista/DCS-7060CX-64-R.yaml

device-types/Arista/DCS-7060CX2-32S-F.yaml

device-types/Arista/DCS-7060CX2-32S-R.yaml

device-types/Arista/DCS-7060QX-64-F.yaml

device-types/Arista/DCS-7060QX-64-R.yaml

device-types/Arista/DCS-7060SX2-48YC6-F.yaml

device-types/Arista/DCS-7060SX2-48YC6-R.yaml

module-types/Arista/PWR-1100AC-F.yaml

module-types/Arista/PWR-1100AC-R.yaml