Enhancement: add option for 21 inch (ETSI) racks (#190)

Author: toerb

plugins/modules/netbox_rack.py

@@ -89,6 +89,7 @@
         choices:
           - 10
           - 19
+          - 21
           - 23
       u_height:
         description:
@@ -220,7 +221,7 @@ def main():
                             "Wall-mounted cabinet",
                         ],
                     ),
-                    width=dict(required=False, type="int", choices=[10, 19, 23,],),
+                    width=dict(required=False, type="int", choices=[10, 19, 21, 23,],),
                     u_height=dict(required=False, type="int"),
                     desc_units=dict(required=False, type="bool"),
                     outer_width=dict(required=False, type="int"),