Enabled leadership service implementation based on consistent map + added precondition checks to partitioned database.

Change-Id: Ia76f8479d9113e7ad67e583e4ca157e62a1cabc7
diff --git a/core/store/dist/src/main/java/org/onosproject/store/consistent/impl/DatabaseManager.java b/core/store/dist/src/main/java/org/onosproject/store/consistent/impl/DatabaseManager.java
index 7ccdd80..9eed61a 100644
--- a/core/store/dist/src/main/java/org/onosproject/store/consistent/impl/DatabaseManager.java
+++ b/core/store/dist/src/main/java/org/onosproject/store/consistent/impl/DatabaseManager.java
@@ -145,7 +145,7 @@
         });
         try {
             if (!latch.await(DATABASE_STARTUP_TIMEOUT_SEC, TimeUnit.SECONDS)) {
-                log.warn("Timeed out watiing for database to initialize.");
+                log.warn("Timed out waiting for database to initialize.");
             }
         } catch (InterruptedException e) {
             Thread.currentThread().interrupt();