[Cisco/Dell/FS] Added some images and details (#2023)

device-types/Cisco/N9K-C9236C.yaml

@@ -5,6 +5,9 @@ part_number: N9K-C9236C
 slug: cisco-n9k-c9236c
 u_height: 1
 is_full_depth: true
+airflow: rear-to-front
+front_image: true
+rear_image: true
 weight: 8.3
 weight_unit: kg
 console-ports:

device-types/Dell/PowerEdge-R6525.yaml

@@ -4,6 +4,9 @@ model: PowerEdge R6525
 slug: dell-poweredge-r6525
 u_height: 1
 is_full_depth: true
+airflow: front-to-rear
+front_image: true
+rear_image: true
 console-ports:
   - name: Serial
     type: de-9

device-types/Dell/PowerEdge-R7515.yaml

@@ -4,6 +4,9 @@ model: PowerEdge R7515
 slug: dell-poweredge-r7515
 u_height: 2
 is_full_depth: true
+airflow: front-to-rear
+front_image: true
+rear_image: true
 console-ports:
   - name: Serial
     type: de-9

device-types/Dell/PowerEdge-R7525.yaml

@@ -4,6 +4,9 @@ model: PowerEdge R7525
 slug: dell-poweredge-r7525
 u_height: 2
 is_full_depth: true
+airflow: front-to-rear
+front_image: true
+rear_image: true
 console-ports:
   - name: Serial
     type: de-9

device-types/FS/N5860-48SC.yaml

@@ -6,6 +6,8 @@ part_number: n5860-48sc
 u_height: 1
 is_full_depth: true
 airflow: front-to-rear
+front_image: true
+rear_image: true
 console-ports:
   - name: Management
     type: rj-45