Timeout when trying to connect to Penrose LDAP server

See http://markmail.org/message/xfbifz72yvb3fidy

The problem is that isConnectionAlive() is generating an extended LDAP request not supported y LDAP server

LDAP authenticator double check connection with

 
succeed = this.connection.isConnected() && this.connection.isConnectionAlive() && this.connection.isBound();

which is useless: anything wronf append durring connectin it throw an exception anyway so thiss code is exactly like

 
succeed = true