Make sharness tests' output helpful when verbose.
This means cating certain files, or running diagnostic
commands. I used a construction like:
test_expect_success ".go-ipfs/ has been created" '
test -d ".go-ipfs" &&
test -f ".go-ipfs/config" &&
test -d ".go-ipfs/datastore" ||
fsh ls -al .go-ipfs
'
The `|| ...` is a diagnostic run when the preceding command
fails. `fsh` is a trivial script that echoes the args, runs
the cmd, and then also fails, making sure the test case fails.
(wouldnt want the diagnostic accidentally returning true and
making it _seem_ like the test case succeeded).
this is a hack around travis key-gen being really slow.
One option would be to add the --key-bits option to daemon
as well. Another option would be to find a better way to
wait for the output, rather than waiting n seconds.
cc @chriscool thoughts?
