Refactoring of IntentId based APIs

- getIntent
- getIntentState
- getInstallableIntents

Change-Id: I6d2073dfa165e0e5adcef46fe5908b563b481a43
diff --git a/apps/sdnip/src/main/java/org/onosproject/sdnip/IntentSynchronizer.java b/apps/sdnip/src/main/java/org/onosproject/sdnip/IntentSynchronizer.java
index c51d7d3..ff9b786 100644
--- a/apps/sdnip/src/main/java/org/onosproject/sdnip/IntentSynchronizer.java
+++ b/apps/sdnip/src/main/java/org/onosproject/sdnip/IntentSynchronizer.java
@@ -579,7 +579,7 @@
             }
 
             IntentState state =
-                intentService.getIntentState(fetchedIntent.id());
+                intentService.getIntentState(fetchedIntent.key());
             if (state == null ||
                 state == IntentState.WITHDRAWING ||
                 state == IntentState.WITHDRAWN) {
@@ -601,7 +601,7 @@
             }
 
             IntentState state =
-                intentService.getIntentState(fetchedIntent.id());
+                intentService.getIntentState(fetchedIntent.key());
             if (state == null ||
                 state == IntentState.WITHDRAWING ||
                 state == IntentState.WITHDRAWN) {