JSON serialiser issue

Change-Id: Ib61a3ef54e548debee129f86aefe88f23349ae6c

Author: Vidyashree-Huawei

serializers/json/src/main/java/org/onosproject/yang/serializers/json/EncoderUtils.java

@@ -161,6 +161,7 @@ private static DataNodeSiblingPositionType getCurrentChildSiblingType(DataNode c
             case UNKNOWN_TYPE:
             case LAST_INSTANCE:
             case NOT_MULTI_INSTANCE_NODE:
+            case SINGLE_INSTANCE_IN_MULTI_NODE:
                 /*
                  * If type of previous child is unknown or last instance,
                  * that means the current child is the first sibling. If

serializers/json/src/test/resources/demo1.yang

@@ -24,24 +24,37 @@ module demo1 {
                 leaf name {
                     type string;
                     description "name of logistics-supervisor";
+                }
+                leaf departmentId {
+                    type string;
+                    description "name of department";
+                 }
             }
 
-            leaf departmentId {
-                type string;
-                description "name of department";
+            list General-supervisor {
+                key "name";
+                leaf name {
+                    type string;
+                }
             }
-        }
 
-        container Purchasing-supervisor {
-            leaf purchasing-specialist {
-                type string;
-                description "name of the purchasing-specialist person";
+            list Supervisor {
+                key "name";
+                leaf name {
+                    type string;
+                }
             }
 
-            leaf-list support {
-                type string;
-                description "name of the support person";
-            }
+            container Purchasing-supervisor {
+                leaf purchasing-specialist {
+                    type string;
+                    description "name of the purchasing-specialist person";
+                }
+
+                leaf-list support {
+                    type string;
+                    description "name of the support person";
+                }
             }
 
             leaf-list Warehouse-supervisor {

serializers/json/src/test/resources/test.json

@@ -21,6 +21,22 @@
             "departmentId": "string6"
           }
         ],
+        "General-supervisor": [
+          {
+            "name": "string5"
+          },
+          {
+            "name": "string6"
+          },
+          {
+            "name": "string7"
+          }
+        ],
+        "Supervisor" : [
+          {
+            "name": "string8"
+          }
+        ],
         "Purchasing-supervisor": {
           "purchasing-specialist": "string7",
           "support": [