MeterStatusWatcher tests fail on windows test slave

[Martin Packman]

Both metering tests in state that use s.unit.WatchMeterStatus()/assertMeterStatusChanged() fail on the windows unit test run on CI:

<http://reports.vapour.ws/releases/2549/job/run-unit-tests-win2012-amd64/attempt/276>

FAIL: meterstatus_test.go:105: MeterStateSuite.TestMeterStatusWatcherRespondsToMetricsManager
FAIL: meterstatus_test.go:98: MeterStateSuite.TestMeterStatusWatcherRespondstoMeterStatus
...
SetUpTest done
[LOG] 0:00.336 INFO juju.mongo dialled mongo successfully on address "127.0.0.1:58193"
[LOG] 0:00.338 INFO juju.mongo dialled mongo successfully on address "127.0.0.1:58193"
meterstatus_test.go:102:
    assertMeterStatusChanged(c, watcher)
meterstatus_test.go:125:
    c.Fatalf("expected event from watcher by now")
...

This may not be directly windows related. The current windows VM is pretty slow, so could also be a timing issue. That said, the code appears to use LongWait correctly, and 10 seconds should be enough for anyone?

[Matthew Williams (mattyw)]

Should be fixed http://reviews.vapour.ws/r/1466/