APIAuthenticationManager: Add Auth manager definition

Signed-off-by: Rohit Yadav <rohit.yadav@shapeblue.com>

server/src/com/cloud/api/auth/APIAuthenticationManager.java

@@ -0,0 +1,24 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you 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 com.cloud.api.auth;
+
+import com.cloud.utils.component.PluggableService;
+
+public interface APIAuthenticationManager extends PluggableService {
+    public APIAuthenticator getAPIAuthenticator(String name);
+}