[ONOS-3498] Add skeleton codes for control plane management;

Change-Id: I741d2b7ed67f35179613c274b9efe375997213eb
diff --git a/apps/cpman/src/main/java/org/onosproject/cpman/ControlMetricType.java b/apps/cpman/src/main/java/org/onosproject/cpman/ControlMetricType.java
new file mode 100644
index 0000000..b5e8281
--- /dev/null
+++ b/apps/cpman/src/main/java/org/onosproject/cpman/ControlMetricType.java
@@ -0,0 +1,34 @@
+/*
+ * Copyright 2015 Open Networking Laboratory
+ *
+ * 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.cpman;
+
+/**
+ * A set of metric type used in control plane.
+ */
+public enum ControlMetricType {
+
+    /** Racket Rate of Control Message. */
+    PacketRate,
+
+    /** Byte Rate of Control Message. */
+    ByteRate,
+
+    /** Cpu Utilization. */
+    CpuInfo,
+
+    /** Memory Utilization. */
+    MemoryInfo
+}