per Brian Dorsey's feedback, move network config logic out of the google_cloud lib code and have the client code select the desired network config via the already supported network_interfaces parameter to the Instance() constructor. This makes a lot more sense than embedding demo-specific knowledge in the general library code.
per Brian Dorsey's feedback, move network config logic out of the google_cloud
lib code and have the client code select the desired network config via the
already supported network_interfaces parameter to the Instance() constructor.
This makes a lot more sense than embedding demo-specific knowledge in the
general library code.

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