Ignore brittle test

Change-Id: I86934dcce1819d5f55d9745b3c573cdc998d6a7f
diff --git a/apps/vpls/src/test/java/org/onosproject/vpls/VplsOperationManagerTest.java b/apps/vpls/src/test/java/org/onosproject/vpls/VplsOperationManagerTest.java
index 7bcc72e..4fac039 100644
--- a/apps/vpls/src/test/java/org/onosproject/vpls/VplsOperationManagerTest.java
+++ b/apps/vpls/src/test/java/org/onosproject/vpls/VplsOperationManagerTest.java
@@ -21,6 +21,7 @@
 import com.google.common.collect.Sets;
 import org.junit.After;
 import org.junit.Before;
+import org.junit.Ignore;
 import org.junit.Test;
 import org.onosproject.cluster.ClusterServiceAdapter;
 import org.onosproject.cluster.Leader;
@@ -251,6 +252,7 @@
      * duplicated operation.
      */
     @Test
+    @Ignore("Test is brittle - revisit")
     public void testDuplicateOperationInQueue() {
         VplsData vplsData = VplsData.of(VPLS1);
         vplsData.addInterfaces(ImmutableSet.of(V100H1, V100H2));