Enforce decoding in authentication check (#1362)

* Enforce decoding in authentication check
+Enforce decoding of controllerId when authentication is performed for the reverse proxy use case
* Remove unused imports

Signed-off-by: Stanislav Trailov <stanislav.trailov@bosch.io>

* Switch approach to decode retrieved values from map

Signed-off-by: Stanislav Trailov <stanislav.trailov@bosch.io>

* Remove unused imports

Signed-off-by: Stanislav Trailov <stanislav.trailov@bosch.io>

* Style improve

Signed-off-by: Stanislav Trailov <stanislav.trailov@bosch.io>

* Move logic to separate class

Signed-off-by: Stanislav Trailov <stanislav.trailov@bosch.io>

* Remove TODO comment

Signed-off-by: Stanislav Trailov <stanislav.trailov@bosch.io>

* Hide public constructor in Util class

Signed-off-by: Stanislav Trailov <stanislav.trailov@bosch.io>

---------

Signed-off-by: Stanislav Trailov <stanislav.trailov@bosch.io>

hawkbit-security-core/src/main/java/org/eclipse/hawkbit/util/UrlUtils.java

@@ -0,0 +1,25 @@
+/**
+ * Copyright (c) 2023 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.util;
+
+import org.springframework.web.util.UriUtils;
+
+import java.nio.charset.StandardCharsets;
+
+public class UrlUtils {
+
+  private UrlUtils() {
+    // Util classes should not have public constructors
+  }
+
+  public static String decodeUriValue(String value) {
+    return UriUtils.decode(value, StandardCharsets.UTF_8);
+  }
+
+}