On 2018-06-18, google-cloud package was deprecated and so
it requires us to use google-cloud-dns instead of google-cloud
for GoogleCloudProvider (Google Cloud DNS).
Signed-off-by: Takuya Noguchi <takninnovationresearch@gmail.com>
I've continually run into problems with the setup.cfg route that I'm not
interested in investing the time to debug and fix. Looking around it doesn't
seem to be very common yet so I've had a hard time finding help/docs etc.