[434837] WARProduct does not implement inherited abstract methods

Add dummy implementations for the inherited abstract methods to make the
build pass successfully.
diff --git a/plugins/org.eclipse.libra.warproducts.core/src/org/eclipse/libra/warproducts/core/WARProduct.java b/plugins/org.eclipse.libra.warproducts.core/src/org/eclipse/libra/warproducts/core/WARProduct.java
index c2059b5..c6d594d 100644
--- a/plugins/org.eclipse.libra.warproducts.core/src/org/eclipse/libra/warproducts/core/WARProduct.java
+++ b/plugins/org.eclipse.libra.warproducts.core/src/org/eclipse/libra/warproducts/core/WARProduct.java
@@ -562,4 +562,14 @@
     return delegate.getConfigurationProperties();
   }
 
+  public IRepositoryInfo[] getRepositories() {
+    return null;
+  }
+
+  public void removeRepositories( IRepositoryInfo[] repositories ) {
+  }
+
+  public void addRepositories( IRepositoryInfo[] repositories ) {
+  }
+
 }