[Fix] added the missing NoOpLogger

Original commit: elastic/x-pack-elasticsearch@2882baf8f9

src/main/java/org/elasticsearch/shield/support/NoOpLogger.java

@@ -0,0 +1,103 @@
+/*
+ * Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one
+ * or more contributor license agreements. Licensed under the Elastic License;
+ * you may not use this file except in compliance with the Elastic License.
+ */
+package org.elasticsearch.shield.support;
+
+import org.elasticsearch.common.logging.ESLogger;
+
+/**
+ *
+ */
+public class NoOpLogger implements ESLogger {
+
+    public static final ESLogger INSTANCE = new NoOpLogger();
+
+    private NoOpLogger() {
+    }
+
+    @Override
+    public String getPrefix() {
+        return "";
+    }
+
+    @Override
+    public String getName() {
+        return "_no_op";
+    }
+
+    @Override
+    public void setLevel(String level) {
+    }
+
+    @Override
+    public String getLevel() {
+        return "NONE";
+    }
+
+    @Override
+    public boolean isTraceEnabled() {
+        return false;
+    }
+
+    @Override
+    public boolean isDebugEnabled() {
+        return false;
+    }
+
+    @Override
+    public boolean isInfoEnabled() {
+        return false;
+    }
+
+    @Override
+    public boolean isWarnEnabled() {
+        return false;
+    }
+
+    @Override
+    public boolean isErrorEnabled() {
+        return false;
+    }
+
+    @Override
+    public void trace(String msg, Object... params) {
+    }
+
+    @Override
+    public void trace(String msg, Throwable cause, Object... params) {
+    }
+
+    @Override
+    public void debug(String msg, Object... params) {
+    }
+
+    @Override
+    public void debug(String msg, Throwable cause, Object... params) {
+    }
+
+    @Override
+    public void info(String msg, Object... params) {
+    }
+
+    @Override
+    public void info(String msg, Throwable cause, Object... params) {
+    }
+
+    @Override
+    public void warn(String msg, Object... params) {
+    }
+
+    @Override
+    public void warn(String msg, Throwable cause, Object... params) {
+    }
+
+    @Override
+    public void error(String msg, Object... params) {
+    }
+
+    @Override
+    public void error(String msg, Throwable cause, Object... params) {
+    }
+}