Upgrade to Atomix 2.0.18

Change-Id: I433e8b85d5aad007531c24495dd8298aeef9f79e
diff --git a/core/store/primitives/src/test/java/org/onosproject/store/primitives/resources/impl/AtomixWorkQueueServiceTest.java b/core/store/primitives/src/test/java/org/onosproject/store/primitives/resources/impl/AtomixWorkQueueServiceTest.java
index 2529523..fdc1d97 100644
--- a/core/store/primitives/src/test/java/org/onosproject/store/primitives/resources/impl/AtomixWorkQueueServiceTest.java
+++ b/core/store/primitives/src/test/java/org/onosproject/store/primitives/resources/impl/AtomixWorkQueueServiceTest.java
@@ -37,7 +37,6 @@
 import io.atomix.time.WallClockTimestamp;
 import io.atomix.utils.concurrent.AtomixThreadFactory;
 import io.atomix.utils.concurrent.SingleThreadContextFactory;
-import io.atomix.utils.concurrent.ThreadContext;
 import org.junit.Test;
 import org.onosproject.store.service.Task;
 
@@ -61,13 +60,12 @@
                 .withPrefix("test")
                 .withStorageLevel(StorageLevel.MEMORY)
                 .build());
-        Snapshot snapshot = store.newSnapshot(ServiceId.from(1), "test", 2, new WallClockTimestamp());
+        Snapshot snapshot = store.newSnapshot(2, new WallClockTimestamp());
 
         DefaultServiceContext context = mock(DefaultServiceContext.class);
         expect(context.serviceType()).andReturn(ServiceType.from(WORK_QUEUE.name())).anyTimes();
         expect(context.serviceName()).andReturn("test").anyTimes();
         expect(context.serviceId()).andReturn(ServiceId.from(1)).anyTimes();
-        expect(context.executor()).andReturn(mock(ThreadContext.class)).anyTimes();
 
         RaftContext server = mock(RaftContext.class);
         expect(server.getProtocol()).andReturn(mock(RaftServerProtocol.class));