Update Primera-4U-Enclosure.yaml

Author: walday

Diff for: device-types/HPE/Primera-4U-Enclosure.yaml

@@ -17,11 +17,11 @@ module-bays:
     position: PSU2
   - name: PSU3
     position: PSU3
-  - name: A(up)
-    position: A
-  - name: B
-    position: B
-  - name: C
-    position: C
-  - name: D(down)
-    position: D
+  - name: 3
+    position: 3
+  - name: 2
+    position: 2
+  - name: 1
+    position: 1
+  - name: 0
+    position: 0