test: Dump all logs on failure

Signed-off-by: Lewis Marshall <lewis@lmars.net>
test: Add timestamp to debug output

Signed-off-by: Lewis Marshall <lewis@lmars.net>
controller: Log scheduler job events

Signed-off-by: Lewis Marshall <lewis@lmars.net>
controller: Log errors starting jobs

Signed-off-by: Lewis Marshall <lewis@lmars.net>
Merge pull request #169 from flynn/test-debug

Add more logging for debugging CI flakiness