Add Alcatel-Lucent OS6900 module bays and module (#702)

* Update OS6900-X20.yaml
* Update OS6900-X40.yaml
* Create OS-XNI-U12.yaml

module-types/Alcatel-Lucent/OS-XNI-U12.yaml

@@ -0,0 +1,42 @@
+---
+manufacturer: Alcatel-Lucent
+model: OS-XNI-U12
+part_number: 903170-90
+comments: OmniSwitch 6900 (OS6900) plug-in module with 12X 10G SFP+ ports
+interfaces:
+  - name: 1/{module}/1
+    type: 10gbase-x-sfpp
+    mgmt_only: false
+  - name: 1/{module}/2
+    type: 10gbase-x-sfpp
+    mgmt_only: false
+  - name: 1/{module}/3
+    type: 10gbase-x-sfpp
+    mgmt_only: false
+  - name: 1/{module}/4
+    type: 10gbase-x-sfpp
+    mgmt_only: false
+  - name: 1/{module}/5
+    type: 10gbase-x-sfpp
+    mgmt_only: false
+  - name: 1/{module}/6
+    type: 10gbase-x-sfpp
+    mgmt_only: false
+  - name: 1/{module}/7
+    type: 10gbase-x-sfpp
+    mgmt_only: false
+  - name: 1/{module}/8
+    type: 10gbase-x-sfpp
+    mgmt_only: false
+  - name: 1/{module}/9
+    type: 10gbase-x-sfpp
+    mgmt_only: false
+  - name: 1/{module}/10
+    type: 10gbase-x-sfpp
+    mgmt_only: false
+  - name: 1/{module}/11
+    type: 10gbase-x-sfpp
+    mgmt_only: false
+  - name: 1/{module}/12
+    type: 10gbase-x-sfpp
+    mgmt_only: false