ppc64le timeouts cursing things

[Tim Penhey]

Hi Curtis,

I have been looking at some of the recent cursings from ppc64le, and the
last two included timeouts for the worker/uniter tests.

On my machine, amd64, i7, 16 gig ram, I get the following:

$ time go test
2015-07-17 03:53:03 WARNING juju.worker.uniter upgrade123.go:26 no
uniter state file found for unit unit-mysql-0, skipping uniter upgrade step
OK: 51 passed
PASS
ok  	github.com/juju/juju/worker/uniter	433.256s

real	7m24.270s
user	3m18.647s
sys	1m2.472s

Now lets ignore the the logging output that someone should fix, we can
see how long it takes here. Given that gccgo on power is slower, we are
going to do two things:

1) increase the timeouts for the uniter

2) change the uniter tests

WRT to point 2, most of the uniter tests are actually fully functional
end to end tests, and should not be run every time we land code.

They should be moved into the featuretest package.

Thanks,
Tim