Ciena - support for 3903 and fix 3928 airflow (#1965)

Co-authored-by: loic.chabert <loic.chabert@jaguar-network.com>

device-types/Ciena/3903AC.yaml

@@ -0,0 +1,27 @@
+---
+manufacturer: Ciena
+model: 3903AC
+slug: ciena-3903ac
+part_number: 170-3903-900
+u_height: 1
+is_full_depth: false
+weight: 1.4
+weight_unit: kg
+airflow: front-to-rear
+console-ports:
+  - name: CONSOLE
+    type: rj-45
+power-ports:
+  - name: PSA
+    type: iec-60320-c14
+    maximum_draw: 96
+  - name: PSB
+    type: iec-60320-c14
+    maximum_draw: 96
+interfaces:
+  - name: '1'
+    type: 1000base-x-sfp
+  - name: '2'
+    type: 1000base-x-sfp
+  - name: '3'
+    type: 1000base-x-sfp

device-types/Ciena/3928AC.yaml

@@ -5,6 +5,9 @@ slug: ciena-3928ac
 part_number: 170-3928-910
 u_height: 1
 is_full_depth: false
+weight: 5
+weight_unit: kg
+airflow: front-to-rear
 console-ports:
   - name: CONSOLE
     type: rj-45