Print out all logs on test failure
Print out all logs on test failure

Since we cannot go into the build dir on OBS to examine the test
logs, override dh_auto_test to print out all logs on failure.

[endlessm/eos-sdk#467]

endlessm/eos-metrics,endlessm/eos-metrics,endlessm/eos-metrics,endlessm/eos-metrics,endlessm/eos-metrics,endlessm/eos-metrics