Added Arista 7280sr3 48yc8 (#332)

* added Arista/DCS-7280SR3-48YC8.yml

device-types/Arista/DCS-7280SR3-48YC8.yaml

@@ -0,0 +1,138 @@
+manufacturer: Arista
+model: DCS-7280SR3-48YC8
+slug: dcs-7280sr3-48yc8
+part_number: DCS-7280SR3-48YC8
+u_height: 1
+is_full_depth: false
+comments: ''
+console-ports:
+  - name: Console
+    type: rj-45
+power-ports:
+  - name: PS1
+    type: iec-60320-c14
+    maximum_draw: 324
+    allocated_draw: 154
+  - name: PS2
+    type: iec-60320-c14
+    maximum_draw: 324
+    allocated_draw: 154
+interfaces:
+  - name: Ethernet1
+    type: 25gbase-x-sfp28
+  - name: Ethernet2
+    type: 25gbase-x-sfp28
+  - name: Ethernet3
+    type: 25gbase-x-sfp28
+  - name: Ethernet4
+    type: 25gbase-x-sfp28
+  - name: Ethernet5
+    type: 25gbase-x-sfp28
+  - name: Ethernet6
+    type: 25gbase-x-sfp28
+  - name: Ethernet7
+    type: 25gbase-x-sfp28
+  - name: Ethernet8
+    type: 25gbase-x-sfp28
+  - name: Ethernet9
+    type: 25gbase-x-sfp28
+  - name: Ethernet10
+    type: 25gbase-x-sfp28
+  - name: Ethernet11
+    type: 25gbase-x-sfp28
+  - name: Ethernet12
+    type: 25gbase-x-sfp28
+  - name: Ethernet13
+    type: 25gbase-x-sfp28
+  - name: Ethernet14
+    type: 25gbase-x-sfp28
+  - name: Ethernet15
+    type: 25gbase-x-sfp28
+  - name: Ethernet16
+    type: 25gbase-x-sfp28
+  - name: Ethernet17
+    type: 25gbase-x-sfp28
+  - name: Ethernet18
+    type: 25gbase-x-sfp28
+  - name: Ethernet19
+    type: 25gbase-x-sfp28
+  - name: Ethernet20
+    type: 25gbase-x-sfp28
+  - name: Ethernet21
+    type: 25gbase-x-sfp28
+  - name: Ethernet22
+    type: 25gbase-x-sfp28
+  - name: Ethernet23
+    type: 25gbase-x-sfp28
+  - name: Ethernet24
+    type: 25gbase-x-sfp28
+  - name: Ethernet25
+    type: 25gbase-x-sfp28
+  - name: Ethernet26
+    type: 25gbase-x-sfp28
+  - name: Ethernet27
+    type: 25gbase-x-sfp28
+  - name: Ethernet28
+    type: 25gbase-x-sfp28
+  - name: Ethernet29
+    type: 25gbase-x-sfp28
+  - name: Ethernet30
+    type: 25gbase-x-sfp28
+  - name: Ethernet31
+    type: 25gbase-x-sfp28
+  - name: Ethernet32
+    type: 25gbase-x-sfp28
+  - name: Ethernet33
+    type: 25gbase-x-sfp28
+  - name: Ethernet34
+    type: 25gbase-x-sfp28
+  - name: Ethernet35
+    type: 25gbase-x-sfp28
+  - name: Ethernet36
+    type: 25gbase-x-sfp28
+  - name: Ethernet37
+    type: 25gbase-x-sfp28
+  - name: Ethernet38
+    type: 25gbase-x-sfp28
+  - name: Ethernet39
+    type: 25gbase-x-sfp28
+  - name: Ethernet40
+    type: 25gbase-x-sfp28
+  - name: Ethernet41
+    type: 25gbase-x-sfp28
+  - name: Ethernet42
+    type: 25gbase-x-sfp28
+  - name: Ethernet43
+    type: 25gbase-x-sfp28
+  - name: Ethernet44
+    type: 25gbase-x-sfp28
+  - name: Ethernet45
+    type: 25gbase-x-sfp28
+  - name: Ethernet46
+    type: 25gbase-x-sfp28
+  - name: Ethernet47
+    type: 25gbase-x-sfp28
+  - name: Ethernet48
+    type: 25gbase-x-sfp28
+# QSFP28(100G) ports can be broke into 4x25 with a model of [49-56]/[1-4]
+  - name: Ethernet49/1
+    type: 100gbase-x-qsfp28
+  - name: Ethernet50/1
+    type: 100gbase-x-qsfp28
+  - name: Ethernet51/1
+    type: 100gbase-x-qsfp28
+  - name: Ethernet52/1
+    type: 100gbase-x-qsfp28
+  - name: Ethernet53/1
+    type: 100gbase-x-qsfp28
+  - name: Ethernet54/1
+    type: 100gbase-x-qsfp28
+  - name: Ethernet55/1
+    type: 100gbase-x-qsfp28
+  - name: Ethernet56/1
+    type: 100gbase-x-qsfp28
+  - name: Management1
+    type: 1000base-t
+    mgmt_only: true
+    
+