Trigger GI request from center

[aklira]

• In the case of connection loss with the RTU, the idea is to inform the Center that the the connection has been lost.
• And we also inform the Center once the connection is established again with the RTU.
• The iec104 south plugin should create and send a specific single point to the north which would forward it to the Center. This single point should be present in the exchanged data configuration based on the iec104 address using the protocol_stack south_monitoring.cnx_loss_status_id attribute.
• If protocol_stack south_monitoring.cnx_loss_status_id is empty or if the data is missing in exchanged data then ignore.
• Once received, for example the Center could automatically send a GI request and inform other peers on the loss of the connection, if supported.
• The right time to send this single point, when the connection is lots and after GI is finished on the south.

The value for connection lost is "do_value": 1 and when the connection is back "do_value": 0

Datapoint to be created:

{
    "data_object":{
       "do_type":<from exchanged data conf>,
       "do_ca":<from exchanged data conf>,
       "do_oa":0,
       "do_cot":3,
       "do_test":false,
       "do_negative":false,
       "do_ioa":<from exchanged data conf>,
       "do_value":1,
       "do_quality_iv":false,
       "do_quality_bl":false,
       "do_quality_ov":false,
       "do_quality_sb":false,
       "do_quality_nt":false,
       "do_ts":<gateway timestamp>,
       "do_ts_iv":false,
       "do_ts_su":false,
       "do_ts_sub":false
    }
 }