Add DistributedLock test commands and STC tests

Change-Id: If410a91418fe1749e738cdc12494859af1c74245
(cherry picked from commit 2c9b159066a564b3ee61802819d81ecadc2aef4a)
diff --git a/apps/test/distributed-primitives/src/main/java/org/onosproject/distributedprimitives/cli/DistributedLockTestCommand.java b/apps/test/distributed-primitives/src/main/java/org/onosproject/distributedprimitives/cli/DistributedLockTestCommand.java
new file mode 100644
index 0000000..9e23cb2
--- /dev/null
+++ b/apps/test/distributed-primitives/src/main/java/org/onosproject/distributedprimitives/cli/DistributedLockTestCommand.java
@@ -0,0 +1,65 @@
+/*
+ * Copyright 2018-present Open Networking Foundation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.onosproject.distributedprimitives.cli;
+
+import java.time.Duration;
+
+import org.apache.karaf.shell.commands.Argument;
+import org.apache.karaf.shell.commands.Command;
+import org.onosproject.cli.AbstractShellCommand;
+import org.onosproject.distributedprimitives.DistributedPrimitivesTest;
+import org.onosproject.store.service.DistributedLock;
+
+@Command(scope = "onos", name = "lock-test",
+    description = "DistributedLock test cli fixture")
+public class DistributedLockTestCommand extends AbstractShellCommand {
+    @Argument(index = 0, name = "name",
+        description = "lock name",
+        required = true,
+        multiValued = false)
+    String name = null;
+
+    @Argument(index = 1, name = "operation",
+        description = "operation",
+        required = true,
+        multiValued = false)
+    String operation = null;
+
+    @Argument(index = 2, name = "durationMillis",
+        description = "lock attempt duration in milliseconds",
+        required = false,
+        multiValued = false)
+    Long durationMillis = null;
+
+    DistributedLock lock;
+
+    @Override
+    protected void execute() {
+        DistributedPrimitivesTest test = get(DistributedPrimitivesTest.class);
+        lock = test.getLock(name);
+        if ("lock".equals(operation)) {
+            lock.lock();
+        } else if ("tryLock".equals(operation)) {
+            if (durationMillis == null) {
+                print("%b", lock.tryLock().isPresent());
+            } else {
+                print("%b", lock.tryLock(Duration.ofMillis(durationMillis)).isPresent());
+            }
+        } else if ("unlock".equals(operation)) {
+            lock.unlock();
+        }
+    }
+}