Make conformance suite exit with code 1

Hi there,

When a test fails, the conformance suite doesn't exit with a status code so Travis prints a green build but it should not. I know that we should not edit the conformance suite but it's quite a little change. If the suite get an update, I will take care of the exit code.

**PS**: apologies for the unrelated diffs deleting whitespaces.

Have a nice day.