Apply multi-catch to reduce duplication

Change-Id: Ic42335acadb3422034d9396066fc92791632af61
diff --git a/cli/src/main/java/org/onosproject/cli/net/AddFlowsCommand.java b/cli/src/main/java/org/onosproject/cli/net/AddFlowsCommand.java
index 6b5d6f4..a5fc611 100644
--- a/cli/src/main/java/org/onosproject/cli/net/AddFlowsCommand.java
+++ b/cli/src/main/java/org/onosproject/cli/net/AddFlowsCommand.java
@@ -95,9 +95,7 @@
                     new FlowRuleBatchOperation(rules));
             try {
                 isSuccess &= op.get().isSuccess();
-            } catch (InterruptedException e) {
-                e.printStackTrace();
-            } catch (ExecutionException e) {
+            } catch (InterruptedException | ExecutionException e) {
                 e.printStackTrace();
             }
             long endTime = System.currentTimeMillis();