Fix remove google-containers images listing

[tumido]

Google recently removed google-containers from the Public images list.

Any call to .images.all results in an exception:

> compute = ::Fog::Compute.new(...)
> compute.images.all
...
Sending HTTP get https://www.googleapis.com/compute/v1/projects/google-containers/global/images?
403
...
Google::Apis::ClientError: accessNotConfigured: Access Not Configured. Compute Engine API has not been used in project 255964991331 before or it is disabled. Enable it by visiting https://console.developers.google.com/apis/api/compute.googleapis.com/overview?project=255964991331 then retry. If you enabled this API recently, wait a few minutes for the action to propagate to our systems and retry.
from /home/tcoufal/.rbenv/versions/2.4.4/lib/ruby/gems/2.4.0/gems/google-api-client-0.23.0/lib/google/apis/core/http_command.rb:218:in `check_status'

Fix removes the google-containers from the list of pulled projects.

[Temikus]

Good catch! Thanks!

I'll integrate and roll out a release shortly.

[Temikus]

This is good to go.