Add Front Images to various Generic patch panels (#3195)

* Add front images to 24 and 48 port half-depth copper patch panels

* Add front images to 24 and 48 port half-depth lc fiber patch panels

* Add front images to 24 port half-depth sc fiber patch panel

device-types/Generic/24-port-copper-patch-panel-half-depth.yaml

@@ -6,6 +6,7 @@ u_height: 1
 is_full_depth: false
 airflow: passive
 is_powered: false
+front_image: true
 front-ports:
   - name: Port 1
     type: 8p8c

device-types/Generic/48-port-copper-patch-panel-half-depth.yaml

@@ -6,6 +6,7 @@ u_height: 2
 is_full_depth: false
 airflow: passive
 is_powered: false
+front_image: true
 front-ports:
   - name: Port 1
     type: 8p8c

device-types/Generic/LC-24-port-fiber-patch-panel-half-depth.yaml

@@ -6,6 +6,7 @@ u_height: 1
 is_full_depth: false
 airflow: passive
 is_powered: false
+front_image: true
 front-ports:
   - name: Port 1
     type: lc

device-types/Generic/LC-48-port-fiber-patch-panel-half-depth.yaml

@@ -6,6 +6,7 @@ u_height: 2
 is_full_depth: false
 airflow: passive
 is_powered: false
+front_image: true
 front-ports:
   - name: Port 1
     type: lc

device-types/Generic/SC-24-double-port-fiber-patch-panel-half-depth.yaml

@@ -6,6 +6,7 @@ u_height: 1
 is_full_depth: false
 airflow: passive
 is_powered: false
+front_image: true
 front-ports:
   - name: '1.1'
     type: sc