Add keystone and neutron config classes and codec with unit tests

Change-Id: Ia89f5be9bac88927a383d56d56413ba23e3e5eb3
diff --git a/apps/openstacknode/api/src/test/java/org/onosproject/openstacknode/api/DefaultNeutronConfigTest.java b/apps/openstacknode/api/src/test/java/org/onosproject/openstacknode/api/DefaultNeutronConfigTest.java
new file mode 100644
index 0000000..63c3833
--- /dev/null
+++ b/apps/openstacknode/api/src/test/java/org/onosproject/openstacknode/api/DefaultNeutronConfigTest.java
@@ -0,0 +1,89 @@
+/*
+ * 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.openstacknode.api;
+
+import com.google.common.testing.EqualsTester;
+import org.junit.Before;
+import org.junit.Test;
+
+import static junit.framework.TestCase.assertEquals;
+import static org.onlab.junit.ImmutableClassChecker.assertThatClassIsImmutable;
+
+/**
+ * Unit tests for DefaultNeutronConfig.
+ */
+public class DefaultNeutronConfigTest {
+
+    private static final boolean USE_METADATA_PROXY_1 = true;
+    private static final boolean USE_METADATA_PROXY_2 = false;
+
+    private static final String METADATA_PROXY_SECRET_1 = "onos";
+    private static final String METADATA_PROXY_SECRET_2 = "cord";
+
+    private NeutronConfig config1;
+    private NeutronConfig sameAsConfig1;
+    private NeutronConfig config2;
+
+    /**
+     * Tests class immutability.
+     */
+    @Test
+    public void testImmutability() {
+        assertThatClassIsImmutable(DefaultNeutronConfig.class);
+    }
+
+    /**
+     * Initial setup for this unit test.
+     */
+    @Before
+    public void setUp() {
+        config1 = DefaultNeutronConfig.builder()
+                        .useMetadataProxy(USE_METADATA_PROXY_1)
+                        .metadataProxySecret(METADATA_PROXY_SECRET_1)
+                        .build();
+
+        sameAsConfig1 = DefaultNeutronConfig.builder()
+                        .useMetadataProxy(USE_METADATA_PROXY_1)
+                        .metadataProxySecret(METADATA_PROXY_SECRET_1)
+                        .build();
+
+        config2 = DefaultNeutronConfig.builder()
+                        .useMetadataProxy(USE_METADATA_PROXY_2)
+                        .metadataProxySecret(METADATA_PROXY_SECRET_2)
+                        .build();
+    }
+
+    /**
+     * Tests object equality.
+     */
+    @Test
+    public void testEquality() {
+        new EqualsTester().addEqualityGroup(config1, sameAsConfig1)
+                .addEqualityGroup(config2)
+                .testEquals();
+    }
+
+    /**
+     * Test object construction.
+     */
+    @Test
+    public void testConstruction() {
+        NeutronConfig config = config1;
+
+        assertEquals(config.useMetadataProxy(), USE_METADATA_PROXY_1);
+        assertEquals(config.metadataProxySecret(), METADATA_PROXY_SECRET_1);
+    }
+}