update strategic patch test for merge list of maps

pkg/util/strategicpatch/patch_test.go

@@ -636,8 +636,12 @@ testCases:
       mergingList:
         - name: 3
           value: 3
+        - name: 4 
+          value: 4 
     modified:
       mergingList:
+        - name: 4 
+          value: 4 
         - name: 1
         - name: 2
           value: 2
@@ -654,6 +658,8 @@ testCases:
       mergingList:
         - name: 3
           value: 3
+        - name: 4 
+          value: 4 
     result:
       mergingList:
         - name: 1
@@ -663,6 +669,8 @@ testCases:
           other: b
         - name: 3
           value: 3
+        - name: 4 
+          value: 4 
   - description: merge lists of maps with conflict
     original:
       mergingList: