On clone create a new instance of the Configuration

To avide effects on the original instance of Connection when the clone
is modified, for instance on authentication checks.

apps/user_ldap/lib/connection.php

@@ -78,6 +78,8 @@ class Connection extends LDAPUtility {
 		//a cloned instance inherits the connection resource. It may use it,
 		//but it may not disconnect it
 		$this->dontDestruct = true;
+		$this->configuration = new Configuration($this->configPrefix,
+												 !is_null($this->configID));
 	}
 
 	public function __get($name) {