Don't log stacktrace if git over HTTP fails due to wrong password

It's a user error if a wrong password is provided and the Gerrit
administrator doesn't need a stacktrace for this.

Change-Id: Ie370440d8be52b4be4ea4f7d052c843a1e414708
Signed-off-by: Edwin Kempin <edwin.kempin@sap.com>

gerrit-server/src/main/java/com/google/gerrit/server/account/AuthenticationFailedException.java

@@ -0,0 +1,26 @@
+// Copyright (C) 2015 The Android Open Source Project
+//
+// 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 com.google.gerrit.server.account;
+
+import com.google.gerrit.server.account.AccountException;
+
+/** Authentication failed due to incorrect user or password. */
+public class AuthenticationFailedException extends AccountException {
+  private static final long serialVersionUID = 1L;
+
+  public AuthenticationFailedException(String message, Throwable why) {
+    super(message, why);
+  }
+}