turn on warning filter to print deprecation warning by default

Author: roycaihw

kubernetes/client/apis/__init__.py

@@ -5,6 +5,8 @@
 
 # alias kubernetes.client.api package and print deprecation warning
 from kubernetes.client.api import *
+
+warnings.filterwarnings('default', module='kubernetes.client.apis')
 warnings.warn(
     "The package kubernetes.client.apis is renamed and deprecated, use kubernetes.client.api instead (please note that the trailing s was removed).",
     DeprecationWarning