fix: datalake-store model validation errors (#6783)

- Add "body" for RESPONSE_BODY_NOT_IN_EXAMPLE error
- "AclStatus" -> "aclStatus"

Author: nschonni

specification/datalake-store/data-plane/Microsoft.DataLakeStore/stable/2016-11-01/examples/FileSystem_GetAclStatus.json

@@ -9,15 +9,17 @@
   },
   "responses": {
     "200": {
-      "AclStatus": {
-        "entries": [
-          "test_entry_1",
-          "test_entry_2"
-        ],
-        "group": "test_group",
-        "owner": "test_owner",
-        "permission": "1",
-        "stickyBit": false
+      "body": {
+        "aclStatus": {
+          "entries": [
+            "test_entry_1",
+            "test_entry_2"
+          ],
+          "group": "test_group",
+          "owner": "test_owner",
+          "permission": "1",
+          "stickyBit": false
+        }
       }
     }
   }