fix: Don't post data if no arguments were passed.

There have been some changes in the production API that make any POST call without arguments to fail with the following error:

`You provided an input body while none was expected`

This is in particular the case in the `cloud/project/{}/kube/{}/kubeconfig` call.

The `kwargs` arguments to the upstream call is passed as `data` to `raw_call()`. A check for `None` is done to prevent adding a body. This condition is never true as in the case of no arguments, `data` is not `None` but contains an empty dict. In this case, loosy testing for _falsiness_ is better.

Author: amartinunowhy

ovh/client.py

@@ -494,7 +494,7 @@ def raw_call(self, method, path, data=None, need_auth=True):
         }
 
         # include payload
-        if data is not None:
+        if data:
             headers['Content-type'] = 'application/json'
             body = json.dumps(data)