Cherry-pick from https://gerrit.onos.onlab.us/#/c/310/

Remove IPortObjects from addLinkImpl failed link exists log error (ONOS-1016)

Change-Id: Ia24b82885e538f4936d782bfec4a95b762d784a3
diff --git a/src/main/java/net/onrc/onos/ofcontroller/core/internal/LinkStorageImpl.java b/src/main/java/net/onrc/onos/ofcontroller/core/internal/LinkStorageImpl.java
index 1f7815d..32f0545 100644
--- a/src/main/java/net/onrc/onos/ofcontroller/core/internal/LinkStorageImpl.java
+++ b/src/main/java/net/onrc/onos/ofcontroller/core/internal/LinkStorageImpl.java
@@ -489,8 +489,8 @@
 				vportSrc.setLinkPort(vportDst);
 				success = true;
 			} else {
-				log.error("LinkStorageImpl:addLinkImpl failed link exists {} {} src {} dst {}",
-						new Object[]{dbop, lt, vportSrc, vportDst});
+				log.error("LinkStorageImpl:addLinkImpl failed link exists {}",
+						new Object[]{lt});
 			}
 		} else {
 			log.error("Ports not found : {}", lt);