Update dependendencies for GCE.
Fix up config.
Fix some typos.
Clean up configs.
Do not set Network in the firewall by default.
Implement waitOperation for GCE instances.
Update copyright year.
Add some TODO comments.
Add gce.go and move the logger there.
fmt.Errorf -> errors.Annotate.
Add a couple more TODO comments.
Add a couple more notes.
Implement StartInstance.
Split out availability zone code and broker code.
Split out the network-related methods.
Add package_test.go.
Move GCE API code into gce.go (and some helpers to other packages).