Addition of Fortinet FG-400F device and images (#1742)

* Add Fortigate FG-400F

* Fortigate FG-400F front and rear images

* Fix duplicate key is_full_depth.

* Create SP-FG400F-PS.yaml

Modular PSU for fortigate FG-400F

* Update FG-400F.yaml

Swap PSU ports for module bays

* Update SP-FG400F-PS.yaml

Remove decimal

module-types/Fortinet/SP-FG400F-PS.yaml

@@ -0,0 +1,9 @@
+---
+manufacturer: Fortinet
+model: SP-FG400F-PS
+part_number: SP-FG400F-PS
+power-ports:
+  - name: PSU{module}
+    type: iec-60320-c14
+    maximum_draw: 189
+    allocated_draw: 154