Refactor of cli show commands:

- Changed `cli_show_config()`
- Removed `cli_show_config_state()`
- Replaced `cli_auto_show()` with `cli_show_auto_mode()`

test/test_json_list.sh

@@ -70,10 +70,7 @@ new "test params: -y $fyang"
 
 testrun "top one leaf-list" '{"json:l1":[1]}' '<l1 xmlns="urn:example:clixon">1</l1>'
 
-# XXX There is a problem with how clixon shows json and xml on top-level
-# Typically, there is a loop over xml children to cope with the case if there is more
-# than one top-level which is invalid in XML.
-# See for example clixon_util_xml.c, clixon_util_json.c, cli_auto_show, cli_show_config
+
 #testrun "top two leaf-list" '{"json:l1":[1,2]}' '<l1 xmlns="urn:example:clixon">1</l1><l1 xmlns="urn:example:clixon">2</l1>'
 
 testrun "one leaf-list" '{"json:c":{"l1":[1]}}' '<c xmlns="urn:example:clixon"><l1>1</l1></c>'