swagger expose Northbound endpoints

Change-Id: I8c19590e24fdf45655386f4abeee2828cc9cb30a
diff --git a/onap-enabler-be/src/main/java/org/onap/osam/controllers/OnapEnablerController.java b/onap-enabler-be/src/main/java/org/onap/osam/controllers/OnapEnablerController.java
new file mode 100644
index 0000000..51efa8e
--- /dev/null
+++ b/onap-enabler-be/src/main/java/org/onap/osam/controllers/OnapEnablerController.java
@@ -0,0 +1,39 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * OSAM
+ * ================================================================================
+ * Copyright (C) 2018 AT&T
+ * ================================================================================
+ * 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.
+ * ============LICENSE_END=========================================================
+ */
+package org.onap.osam.controllers;
+
+import org.springframework.beans.factory.annotation.Value;
+import org.springframework.web.client.RestTemplate;
+
+import java.util.stream.Collectors;
+import java.util.stream.Stream;
+
+abstract class OnapEnablerController {
+	private static final String SLASH = "/";
+
+	@Value("${osam.client.url}")
+	private String osamUrl;
+
+	RestTemplate restTemplate;
+
+	String buildRequestPath(String... args){
+		return osamUrl.concat(Stream.of(args).collect(Collectors.joining(SLASH)));
+	}
+}