Add elevation images to Cisco C1000-48P-4G-L (#2275)

* Add elevation images to Cisco C1000-48P-4G-L

* update cisco-c1000-48t-4g-l and revert cisco-c1000-48p-4g-l

* update cisco-c1000-48p-4g-l images

device-types/Cisco/C1000-48T-4G-L.yaml

@@ -6,6 +6,10 @@ part_number: C1000-48T-4G-L
 comments: '[Cisco Catalyst 1000 Series Switches Data Sheet](https://www.cisco.com/c/en/us/products/collateral/switches/catalyst-1000-series-switches/nb-06-cat1k-ser-switch-ds-cte-en.html)'
 u_height: 1
 is_full_depth: false
+weight: 3.95
+weight_unit: kg
+front_image: true
+rear_image: true
 console-ports:
   - name: con0
     type: rj-45