Do not display skipped hosts/tasks. (#5620)

Replace deprecated callback plugin `skippy` with `default`, which
also supports ignoring skipped hosts.

ansible.cfg

@@ -12,7 +12,8 @@ gathering = smart
 fact_caching = jsonfile
 fact_caching_connection = /tmp
 fact_caching_timeout = 7200
-stdout_callback = skippy
+stdout_callback = default
+display_skipped_hosts = no
 library = ./library
 callback_whitelist = profile_tasks
 roles_path = roles:$VIRTUAL_ENV/usr/local/share/kubespray/roles:$VIRTUAL_ENV/usr/local/share/ansible/roles:/usr/share/kubespray/roles