Initial port of run_system_tests

Definitely won't work all the way, but let's see how far it gets
Fix mode on script/run_system_tests
Use default quota for now
go get cf-acceptance-tests
go get -d .../cf-acceptance-tests

Which will only download without attempting to install anything
What happens if we remove the config variable?
Try an empty config.json
Absolute path to integration_config.json