ipaserver/dcerpc: avoid logging stack trace in retrieve_anonymously

If an error occured when searching foc a DC a stack trace was logged,
and execution was aborted.

This patch allows execution to continue and log the error message that
caused the 'finddc' do fail.

Fixes: https://pagure.io/freeipa/issue/9484
Related: https://issues.redhat.com/browse/RHEL-12149

Signed-off-by: Rafael Guterres Jeffman <rjeffman@redhat.com>
Reviewed-By: Alexander Bokovoy <abokovoy@redhat.com>

ipaserver/dcerpc.py

@@ -935,7 +935,12 @@ def retrieve_anonymously(self, remote_host,
             else:
                 result = netrc.finddc(address=remote_host, flags=flags)
         except RuntimeError as e:
-            raise assess_dcerpc_error(e)
+            dcerpc_error = assess_dcerpc_error(e)
+            logger.error(
+                getattr(dcerpc_error, "info", None)
+                or getattr(dcerpc_error, "reason", str(dcerpc_error))
+            )
+            return False
 
         if not result:
             return False