Remove is_error since this Macro is deprecated in development version of json-c, OpenWRT master upgrade the libjsonc to 0.14.2 already

If Management IP address changes, no connection with the  ACS can be...

See merge request iopsys/icwmp!19

If Management IP address changes, no connection with the  ACS can be established without restarting the daemon

Ticket refs #2618: libbbf: enhance separation between libbbf_api and libbbfdm (functions: dm_update_file_enabled_notify, copy_temporary_file_to_original_file,  del_list_fault_param, json functions)

Ticket refs #2618: TR069: Ameliorate separation between libbbf_api and libbbfdm (apply for end_session_flag)

Ticket refs #2673: TR069: No '4 value change' sent in case of active passive notification (the case of parameter without ubus tr069 notify)

use end_session_flag variable cwmp_set_end_sesion function in libbbf_api instead libbbfdm end session functions

link icwmpd to libbbfdm library (data model) after separating libbbfdm into two libraries: libbbf_api (API) and libbbfdm (data model)