AppVeyor builds just sitting "queued"

[daspecster]

Not sure what's up, but all the appveyor builds appear to be stalled out...

https://ci.appveyor.com/project/GoogleCloudPlatform/google-cloud-python/build/1.0.1016.datastore-0.22.1

[daspecster]

When I started one manually, just now, it seems to work...
https://ci.appveyor.com/project/daspecster/google-cloud-python/build/job/y5k0bq6prnx4liv8

[daspecster]

Also see: https://github.com/GoogleCloudPlatform/gcloud-common/issues/215