json_print: Add new json object function not as array item

json_print: Add new json object function not as array item

Currently new json object opens (and delete_json_obj closes) the object as
an array, what adds prints for the matching bracket '[' ']' at the
start/end of the object. This patch adds new_json_obj_plain() and the
matching delete_json_obj_plain() to enable opening and closing json object,
not as array and leave it to the using function to decide which type of
object to open/close as the main object.

Signed-off-by: Ron Diskin <rondi@mellanox.com>
Reviewed-by: Moshe Shemesh <moshe@mellanox.com>
Reviewed-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>