Refactoring of IntentId based APIs

- getIntent
- getIntentState
- getInstallableIntents

Change-Id: I6d2073dfa165e0e5adcef46fe5908b563b481a43
diff --git a/core/api/src/test/java/org/onosproject/net/intent/IntentServiceAdapter.java b/core/api/src/test/java/org/onosproject/net/intent/IntentServiceAdapter.java
index 9441fa4..d600dde 100644
--- a/core/api/src/test/java/org/onosproject/net/intent/IntentServiceAdapter.java
+++ b/core/api/src/test/java/org/onosproject/net/intent/IntentServiceAdapter.java
@@ -43,17 +43,17 @@
     }
 
     @Override
-    public Intent getIntent(IntentId id) {
+    public Intent getIntent(Key intentKey) {
         return null;
     }
 
     @Override
-    public IntentState getIntentState(IntentId id) {
+    public IntentState getIntentState(Key intentKey) {
         return null;
     }
 
     @Override
-    public List<Intent> getInstallableIntents(IntentId intentId) {
+    public List<Intent> getInstallableIntents(Key intentKey) {
         return null;
     }