Michal & Sam: Beginnings of leenatron healthcheck.
Sam, Michal & Paulo: Start end-to-end testing.
Paulo & Sam: Bring up CHOMP and Leenatron for testing together as a unit.
Leena&Sam: Moved test_contracts to leenatron
Sam&Rich: merge master
Merge pull request #298 from InsolvencyService/chomp-healthcheck

Chomp healthcheck