Even when a CLI command called through the cli_inband API failed
the API would return 0 (SUCCESS). This patch fixes that,
but since most CLI handlers return error->code == 0,
in most failure cases it will return -1 (UNSPECIFIED ERROR).
Type: fix
Change-Id: Ic83f3b23e8e8954bb8aa211301baba24e8c20ef6
Signed-off-by: Ole Troan <ot@cisco.com>