review: extra test case added v1

Author: iaorekhov-1980

fe/fe-authentication/fe-authentication-plugins/fe-authentication-plugin-ldap/src/test/java/org/apache/doris/authentication/plugin/ldap/LdapAuthenticationPluginIntegrationTest.java

@@ -31,6 +31,7 @@
 import com.unboundid.ldif.LDIFException;
 import com.unboundid.ldif.LDIFReader;
 import org.junit.jupiter.api.AfterAll;
+import org.junit.jupiter.api.AfterEach;
 import org.junit.jupiter.api.Assertions;
 import org.junit.jupiter.api.BeforeAll;
 import org.junit.jupiter.api.BeforeEach;