Fix tempest integration due to change in tempest

This patch fixes the tempest integration with congress. The following
change:  Ia1ed4ab3cd2e4941fb072b3390f4859420989e74 in tempest removed
the debug file so this patch updates the congress manager to reflect
that change.

Change-Id: Icf5018c45dd9b3286156366c7e11341e5fd0ef32
Closes-bug: 1401665