Fix: Make bookstore data consistent

 - Removed list named invoice from all bookstore files
 - Added a new parent list as bookstore-address
 - Refactored tests

Issue-ID: CPS-1813
Signed-off-by: Arpit Singh <as00745003@techmahindra.com>
Change-Id: I5c7e83e1ee0ad9ac1d94d1906c2361c7a00d49af
diff --git a/cps-service/src/test/resources/bookstore.yang b/cps-service/src/test/resources/bookstore.yang
index b7a52e2..2033fc7 100644
--- a/cps-service/src/test/resources/bookstore.yang
+++ b/cps-service/src/test/resources/bookstore.yang
@@ -15,31 +15,22 @@
         }
     }
 
-    list invoice {
-        key "ProductID";
-        leaf ProductID {
-            type uint64;
-            mandatory "true";
-            description
-            "Unique product ID. Example: 001";
-        }
-        leaf ProductName {
+    list bookstore-address {
+        key "bookstore-name";
+        leaf bookstore-name {
             type string;
-            mandatory "true";
             description
-            "Name of the Product";
+            "Name of bookstore. Example: My Bookstore";
         }
-        leaf price {
-            type uint64;
-            mandatory "true";
+        leaf address {
+            type string;
             description
-            "Price of book";
+            "Address of store";
         }
-        leaf stock {
-            type boolean;
-            default "false";
+        leaf postal-code {
+            type string;
             description
-            "Book in stock or not. Example value: true";
+            "Postal code of store";
         }
     }