This fix moves helper functions containerIsStopped and
containerIsInState to integration/internal/container,
so that they could be used outside of integration/container.
Signed-off-by: Yong Tang <yong.tang.github@outlook.com>
(cherry picked from commit eda311c18f388ed4541dc44dcfba08cd4347a685)
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>