Resolve L2SS-188 "2021 05 27 branched from master udp recv sst client"

Closes L2SS-188 adds sst client capable of receiving udp packets as well as a 'statistics_device' that uses said client. currently just tracks a the timestamp when the packet was received and the packet count.

CDB/thijs_ConfigDb.json

@@ -36,13 +36,6 @@
             "1": {
                 "example_device": {
                     "LTS/example_device/1": {
-                         "attribute_properties": {
-                            "Ant_mask_RW": {
-                                "archive_period": [
-                                    "600000"
-                                ]
-                            }
-						},
                         "properties": {
                             "OPC_Server_Name": [
                                 "host.docker.internal"
@@ -62,13 +55,6 @@
             "1": {
                 "ini_device": {
                     "LTS/ini_device/1": {
-                         "attribute_properties": {
-                            "Ant_mask_RW": {
-                                "archive_period": [
-                                    "600000"
-                                ]
-                            }
-						},
                         "properties": {
                             "OPC_Server_Name": [
                                 "host.docker.internal"
@@ -88,13 +74,6 @@
             "1": {
                 "APSCTL": {
                     "LTS/APSCTL/1": {
-                         "attribute_properties": {
-                            "Ant_mask_RW": {
-                                "archive_period": [
-                                    "600000"
-                                ]
-                            }
-						},
                         "properties": {
                             "OPC_Server_Name": [
                                 "ltspi.astron.nl"
@@ -110,17 +89,23 @@
                 }
             }
         },
+        "Statistics": {
+            "1": {
+                "SST": {
+                    "LTS/SST/1": {
+                        "properties": {
+                            "SST_Port": [
+                                "5001"
+                            ]
+                        }
+                    }
+                }
+            }
+        },
         "SNMP": {
             "1": {
                 "SNMP": {
                     "LTS/SNMP/1": {
-                         "attribute_properties": {
-                            "Ant_mask_RW": {
-                                "archive_period": [
-                                    "600000"
-                                ]
-                            }
-						},
                         "properties": {
                             "SNMP_community": [
                                 "public"