Make _log_console_output non-private

_log_console_output is made public by this commit as
the tempest.scenario.manager interface is meant to be
consumed by tempest plugins.

Implements: blueprint tempest-scenario-manager-stable
Signed-off by: Soniya Vyas<svyas@redhat.com>

Change-Id: I78076ebb0fc955662b5ee3f67938f9fc939882d3
4 files changed