Use correct method from tempest

_log_console_output was made a proper public method in tempest's
scenario manager, and this breaks it's single usage in barbican's
tempest plugin.

This is fixed already in the master of barbican-tempest-plugin
by removing many methods that became public interface suitable for
usage by tempest plugins.

Closes-Issue: PRODX-26470
Change-Id: I514a03e9485f377cc404472b320ad48646138e7d
diff --git a/barbican_tempest_plugin/tests/scenario/manager.py b/barbican_tempest_plugin/tests/scenario/manager.py
index 2e24084..422a392 100644
--- a/barbican_tempest_plugin/tests/scenario/manager.py
+++ b/barbican_tempest_plugin/tests/scenario/manager.py
@@ -464,7 +464,7 @@
             if caller:
                 message = '(%s) %s' % (caller, message)
             LOG.exception(message)
-            self._log_console_output()
+            self.log_console_output()
             raise
 
         return linux_client