Nutch 2.1 - Unauthorized

[Daniel Hüsch]

Hi,

we used Nutch 1.x with an authentication for tomcat.
We used this:
<role rolename="solr_admin"/>

 <user username="USER"
       password="PASSWORD"
       roles="solr_admin"/>

in /conf/tomcat-users.xml
And in configuration of Nutch 1.x we used "solr.auth" for the connection 
between nutch and solr.
But this function (solr.auth) is not available in Nutch 2.1.

So we got an error on hadoop.log at indexing:

2013-05-22 12:50:26,581 ERROR solr.SolrIndexerJob - SolrIndexerJob: 
org.apache.solr.common.SolrException: Unauthorized
Unauthorized


How can we indexing with an authentication and Nutch 2.1?

Thanks,

Daniel