Refactored code to consolidate functionality in Database* classes.
Renamed few methods and variables to align with local convention and also to match the description of functionality.

Change-Id: Ib17e73079534c76f76bcb01f14b6496e62275dbd
diff --git a/core/store/dist/src/main/java/org/onosproject/store/consistent/impl/Database.java b/core/store/dist/src/main/java/org/onosproject/store/consistent/impl/Database.java
index 91cfa4b..a04a592 100644
--- a/core/store/dist/src/main/java/org/onosproject/store/consistent/impl/Database.java
+++ b/core/store/dist/src/main/java/org/onosproject/store/consistent/impl/Database.java
@@ -81,4 +81,4 @@
       .addStartupTask(() -> coordinator.open().thenApply(v -> null))
       .addShutdownTask(coordinator::close);
   }
-}
+}
\ No newline at end of file