Support SNI in python requests, and only delete tuf metadata if it

exists

util/tufmetadata/api.py

@@ -199,7 +199,7 @@ class ImplementedTUFMetadataAPI(TUFMetadataAPIInterface):
 
     headers.update(DEFAULT_HTTP_HEADERS)
     resp = self._client.request(method, url, json=body, params=params, timeout=timeout,
-                                verify=MITM_CERT_PATH, headers=headers)
+                                verify=True, headers=headers)
     if resp.status_code // 100 != 2:
       raise Non200ResponseException(resp)
     return resp