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/DefaultTransactionalMap.java b/core/store/dist/src/main/java/org/onosproject/store/consistent/impl/DefaultTransactionalMap.java
index 91151b0..ade7033 100644
--- a/core/store/dist/src/main/java/org/onosproject/store/consistent/impl/DefaultTransactionalMap.java
+++ b/core/store/dist/src/main/java/org/onosproject/store/consistent/impl/DefaultTransactionalMap.java
@@ -164,7 +164,7 @@
             Versioned<V> original = readCache.get(key);
             if (original != null) {
                 updates.add(DatabaseUpdate.newBuilder()
-                        .withTableName(name)
+                        .withMapName(name)
                         .withType(DatabaseUpdate.Type.REMOVE_IF_VERSION_MATCH)
                         .withKey(keyCache.getUnchecked(key))
                         .withCurrentVersion(original.version())
@@ -175,14 +175,14 @@
             Versioned<V> original = readCache.get(key);
             if (original == null) {
                 updates.add(DatabaseUpdate.newBuilder()
-                        .withTableName(name)
+                        .withMapName(name)
                         .withType(DatabaseUpdate.Type.PUT_IF_ABSENT)
                         .withKey(keyCache.getUnchecked(key))
                         .withValue(serializer.encode(value))
                         .build());
             } else {
                 updates.add(DatabaseUpdate.newBuilder()
-                        .withTableName(name)
+                        .withMapName(name)
                         .withType(DatabaseUpdate.Type.PUT_IF_VERSION_MATCH)
                         .withKey(keyCache.getUnchecked(key))
                         .withCurrentVersion(original.version())