Adding pdp-common module to policy/common

1) Adding pdp-common module to policy/common. So that all common code
across various pdps will be at one place.
2) Adding java classes for PDP_STATUS, PDP_UPDATE, PDP_STATE_CHANGE &
PDP_HEALTH_CHECK messages.
3) Adding enums for PDPHeathStatus, PDPResponseStatus & PdpState.
4) Adding relevant test cases.

Change-Id: I13e62f393fbd1c261696783cfe4b7dfff72625ba
Issue-ID: POLICY-1443
Signed-off-by: ramverma <ram.krishna.verma@est.tech>

1 files changed, 41 insertions, 0 deletions

diff --git a/pdp-common/src/main/java/org/onap/policy/pdp/common/models/Policy.java b/pdp-common/src/main/java/org/onap/policy/pdp/common/models/Policy.java
new file mode 100644
index 00000000..002a777f
--- /dev/null
+++ b/pdp-common/src/main/java/org/onap/policy/pdp/common/models/Policy.java
@@ -0,0 +1,41 @@
+/*-
+ * ============LICENSE_START=======================================================
+ *  Copyright (C) 2019 Nordix 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.
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ * ============LICENSE_END=========================================================
+ */
+
+package org.onap.policy.pdp.common.models;
+
+import lombok.Getter;
+import lombok.Setter;
+import lombok.ToString;
+
+/**
+ * Class to represent a policy running in a PDP.
+ *
+ * @author Ram Krishna Verma (ram.krishna.verma@est.tech)
+ */
+@Getter
+@Setter
+@ToString
+public class Policy {
+
+    private String name;
+    private String policyType;
+    private String policyTypeVersion;
+    private String properties;
+}