oidc provider behind proxy

This fix allows client to communicate with OIDC provider which located out or company perimeter and requires to use proxy server

Author: SkiAn2007

Diff for: kubernetes/base/config/kube_config.py

@@ -420,7 +420,7 @@ def _load_oid_token(self, provider):
         return self.token
 
     def _refresh_oidc(self, provider):
-        config = Configuration()
+        config = Configuration().get_default_copy()
 
         if 'idp-certificate-authority-data' in provider['config']:
             ca_cert = tempfile.NamedTemporaryFile(delete=True)