Adding a component config to take down single homed host ports when all uplinks are lost.

In addition:
   - handle port updates that may be lost if mastership changes at same time
   - fix javadoc in DeviceService

Change-Id: I032909e8ab9564cf9c978b1d66abd3ab32c814d7
diff --git a/app/src/test/java/org/onosproject/segmentrouting/MockLinkHandler.java b/app/src/test/java/org/onosproject/segmentrouting/MockLinkHandler.java
index 2819c9d..fe5df5d 100644
--- a/app/src/test/java/org/onosproject/segmentrouting/MockLinkHandler.java
+++ b/app/src/test/java/org/onosproject/segmentrouting/MockLinkHandler.java
@@ -29,7 +29,7 @@
     }
 
     @Override
-    void checkUplinksForDualHomedHosts(HostLocation loc) {
+    void checkUplinksForHost(HostLocation loc) {
         // currently does nothing - can be extended to be a useful mock when
         // implementing unit tests for link handling
     }