ONOS-5937

 - created enum for target config and replaced all appropiate usages
 - added old methods and had them pointing to new implementation
 - added deprecated annotation to old methods

Change-Id: I2562588d32c7ab944eb44a13e9b25a342196edf2
diff --git a/protocols/netconf/api/src/main/java/org/onosproject/netconf/TargetConfig.java b/protocols/netconf/api/src/main/java/org/onosproject/netconf/TargetConfig.java
new file mode 100644
index 0000000..ecc924c
--- /dev/null
+++ b/protocols/netconf/api/src/main/java/org/onosproject/netconf/TargetConfig.java
@@ -0,0 +1,47 @@
+/*
+ * Copyright 2017-present 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.netconf;
+
+public enum TargetConfig {
+    RUNNING("running"),
+    CANDIDATE("candidate"),
+    STARTUP("startup");
+
+    private String name;
+
+    TargetConfig(String name) {
+        this.name = name;
+    }
+
+    TargetConfig toTargetConfig(String targetConfig) {
+        switch (targetConfig) {
+            case "running":
+                return RUNNING;
+            case "candidate":
+                return CANDIDATE;
+            case "startup":
+                return STARTUP;
+            default:
+                return null;
+        }
+    }
+
+    @Override
+    public String toString() {
+        return this.name;
+    }
+}