Add delete connection function to DELETE /who

public/swagger/swagger-who.yaml

@@ -78,10 +78,11 @@ paths:
   delete:
     tags:
     - who
-    summary: "Delete the specified entity, which is assumed to be a leaf"
+    summary: "Delete the specified entity, which is assumed to be a leaf, or only its connection if specified"
     parameters:
     - $ref: "#/components/parameters/id"
     - $ref: "#/components/parameters/namespace"
+    - $ref: "#/components/parameters/connection"
     responses:
       200:
         $ref: "#/components/schemas/ok"
@@ -98,6 +99,13 @@ components:
     namespace:
       $ref: "./swagger.yaml#/components/parameters/namespace"
 
+    connection:
+      name: connection
+      in: query
+      description: "An entity's connection's name"
+      schema:
+        type: string
+
     light:
       name: light
       in: query