Keystore 2.0: Update to canonical service name.

Bug: 179907868
Test: N/A
Change-Id: I74adab04bd84f120bc547011151ea77769b6bda9

keystore/java/android/security/KeyStore2.java

@@ -126,6 +126,8 @@ public class KeyStore2 {
         }
     }
 
+    private static final String KEYSTORE2_SERVICE_NAME =
+            "android.system.keystore2.IKeystoreService/default";
 
     private KeyStore2() {
         mBinder = null;
@@ -138,7 +140,7 @@ public class KeyStore2 {
     private synchronized IKeystoreService getService(boolean retryLookup) {
         if (mBinder == null || retryLookup) {
             mBinder = IKeystoreService.Stub.asInterface(ServiceManager
-                    .getService("android.system.keystore2"));
+                    .getService(KEYSTORE2_SERVICE_NAME));
         }
         return mBinder;
     }