Fix regression of repo not registering prefixes for previously inserted data

Change-Id: I90e47def6219560cdadd281b8f65b16036aa0801
Refs: #4247
diff --git a/src/storage/repo-storage.hpp b/src/storage/repo-storage.hpp
index 5934b12..fe355ad 100644
--- a/src/storage/repo-storage.hpp
+++ b/src/storage/repo-storage.hpp
@@ -47,9 +47,18 @@
   };
 
 public:
+  explicit
   RepoStorage(Storage& store);
 
   /**
+   * @brief Notify about existing data
+   *
+   * Note, this cannot be in constructor, as have to be called after signal is connected
+   */
+  void
+  notifyAboutExistingData();
+
+  /**
    *  @brief  insert data into repo
    */
   bool