OpenAPI: added charset=utf-8 to application/json content type

Signed-off-by: Nicola Murino <nicola.murino@gmail.com>

openapi/httpfs.yaml

@@ -33,7 +33,7 @@ paths:
         200:
           description: successful operation
           content:
-            application/json:
+            application/json; charset=utf-8:
               schema:
                 $ref: '#/components/schemas/FileInfo'
         401:
@@ -343,7 +343,7 @@ paths:
         200:
           description: successful operation
           content:
-            application/json:
+            application/json; charset=utf-8:
               schema:
                 type: array
                 items:
@@ -377,7 +377,7 @@ paths:
         200:
           description: successful operation
           content:
-            application/json:
+            application/json; charset=utf-8:
               schema:
                 type: object
                 properties:
@@ -417,7 +417,7 @@ paths:
         200:
           description: successful operation
           content:
-            application/json:
+            application/json; charset=utf-8:
               schema:
                 type: object
                 properties:
@@ -452,7 +452,7 @@ paths:
         200:
           description: successful operation
           content:
-            application/json:
+            application/json; charset=utf-8:
               schema:
                 $ref: '#/components/schemas/StatVFS'
         401:
@@ -472,61 +472,61 @@ components:
     OKResponse:
       description: successful operation
       content:
-        application/json:
+        application/json; charset=utf-8:
           schema:
             $ref: '#/components/schemas/ApiResponse'
     BadRequest:
       description: Bad Request
       content:
-        application/json:
+        application/json; charset=utf-8:
           schema:
             $ref: '#/components/schemas/ApiResponse'
     Unauthorized:
       description: Unauthorized
       content:
-        application/json:
+        application/json; charset=utf-8:
           schema:
             $ref: '#/components/schemas/ApiResponse'
     Forbidden:
       description: Forbidden
       content:
-        application/json:
+        application/json; charset=utf-8:
           schema:
             $ref: '#/components/schemas/ApiResponse'
     NotFound:
       description: Not Found
       content:
-        application/json:
+        application/json; charset=utf-8:
           schema:
             $ref: '#/components/schemas/ApiResponse'
     NotImplemented:
       description: Not Implemented
       content:
-        application/json:
+        application/json; charset=utf-8:
           schema:
             $ref: '#/components/schemas/ApiResponse'
     Conflict:
       description: Conflict
       content:
-        application/json:
+        application/json; charset=utf-8:
           schema:
             $ref: '#/components/schemas/ApiResponse'
     RequestEntityTooLarge:
       description: Request Entity Too Large, max allowed size exceeded
       content:
-        application/json:
+        application/json; charset=utf-8:
           schema:
             $ref: '#/components/schemas/ApiResponse'
     InternalServerError:
       description: Internal Server Error
       content:
-        application/json:
+        application/json; charset=utf-8:
           schema:
             $ref: '#/components/schemas/ApiResponse'
     DefaultResponse:
       description: Unexpected Error
       content:
-        application/json:
+        application/json; charset=utf-8:
           schema:
             $ref: '#/components/schemas/ApiResponse'
   schemas: