LDAP认证忽略大小写，修正从LDAP服务器返回值设置Username

kafka-manager-common/src/main/java/com/xiaojukeji/kafka/manager/common/utils/SplitUtils.java

@@ -0,0 +1,14 @@
+package com.xiaojukeji.kafka.manager.common.utils;
+
+/**
+ * @className: SplitUtils
+ * @description: Split string of type keyValue
+ * @author: Hu.Yue
+ * @date: 2021/8/4
+ **/
+public class SplitUtils {
+
+    public static String keyValueSplit(String keyValue){
+        return keyValue.split(":\\s+")[1];
+    }
+}