Added userinfo endpoint to validate basic auth (#1131)

* Added userinfo endpoint to validate basic auth
* Fixed the bean exception for failing tests
* Added tests for userinfo endpoint with basic auth
* Added the missing license header

Signed-off-by: Anand kumar <anand.kumar@bosch-si.com>

hawkbit-rest/hawkbit-mgmt-resource/src/main/java/org/eclipse/hawkbit/mgmt/rest/resource/MgmtBasicAuthResource.java

@@ -0,0 +1,42 @@
+/**
+ * Copyright (c) 2021 Bosch.IO GmbH and others.
+ *
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/epl-v10.html
+ */
+package org.eclipse.hawkbit.mgmt.rest.resource;
+
+import org.eclipse.hawkbit.mgmt.json.model.auth.MgmtUserInfo;
+import org.eclipse.hawkbit.mgmt.rest.api.MgmtBasicAuthRestApi;
+import org.eclipse.hawkbit.tenancy.TenantAware;
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.annotation.RestController;
+
+/**
+ * REST Resource handling basic auth validation.
+ */
+@RestController
+public class MgmtBasicAuthResource implements MgmtBasicAuthRestApi {
+
+    private final TenantAware tenantAware;
+
+    /**
+     * Default constructor
+     *
+     * @param tenantAware
+     *          tenantAware
+     */
+    public MgmtBasicAuthResource(TenantAware tenantAware) {
+        this.tenantAware = tenantAware;
+    }
+
+    @Override
+    public ResponseEntity<MgmtUserInfo> validateBasicAuth() {
+        MgmtUserInfo userInfo = new MgmtUserInfo();
+        userInfo.setUsername(tenantAware.getCurrentUsername());
+        userInfo.setTenant(tenantAware.getCurrentTenant());
+        return ResponseEntity.ok(userInfo);
+    }
+}